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science for a changing world

U.S. DEPARTMENT OF THE INTERIOR

Prepared in cooperation with the

OPEN-FILE REPORT 2011—-1185-A

NO VERTICAL EXAGGERATION Modified from original compilation NO VERTICAL EXAGGERATION

of Smirnov and Kusov (1965)

Modified from original compilation’
of Smimov and Kusov (1965)

Haji-Gak Formation.

U.S. GEOLOGICAL SURVEY Afghan Geological Survey USGS Afghanistan Project Product No. 194
Under the auspices of the U.S. Department of Defense
68°0'30°E 68°1'0"E 68°1'30°E 68°2'30°E 68°39 0°E 68°3'30"E 68°4'0°E 68°4'30°E 68°S 0°E 68°5'30°E 68°6 0"E 68°6'30°E 68°70 68°7'30"°E 68°80°E
34°40:0°'N f \ </J
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34°39'30'N
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34°42'30'N
9
34°390'N
o ff
34°420'N
34°38'30"N,
34°41'30°N
68°1'30°E 68°20°E 68°2'30°E 68°4'0"E 68°4'30°E 68°5'30"E 68°70'E 68°7'30°E 68°8 0"E 68°8'30°E
Topography derived from Advanced Spaceborne Thermal Emission and Reflection SCALE 1:10 000 Modified from original compilation of Smirnov
Radiometer (ASTER) 30-meter Global Digital Elevation Model (GDEM) data, 2009 1 0 + MILE and Kusov (1965); see References Cited
Hydrography derived from ASTER GDEM data
Projection and 15-second grid: Universal Transverse Mercator (UTM), zone 42 north N 5 0) 1 KILOMETER
World Geodetic System (WGS) 1984 Datum
CONTOUR INTERVAL 25 METERS
B B’
5
METERS Ss METERS.
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= w <
¥ 6 3800 4 z F 3800
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aan 5 , $
A 55 & A 3700 5 g + 3700
METERS iz a METERS <
3400 ' 3400 3600 4 -- 3600
Abta Abq
3300 Gsq_Abs \Abe 3600 4 - 3500
3200 3200 3400 4 }- 3400 »
: ‘ fs % RS f ”
3100 3100 3300 4 P3300 Figure 1.—Areal view of the Haji-Gak iron deposit, looking Figure 2.—View looking southeast at the contact between iron Figure 3.—View looking northwest toward the mountain of Figure 4.—Massive, coarsely crystalline and brecciated buff Figure 5.—View looking east along the strike of the Haji-Gak Figure 6.—Helicopter landing site in iron formation, looking west. Figure 7.—Close-up view of the dark, magnetite-rich iron Figure 8.—View looking south across the Haji-Gak-Kharzar fault.
north. White outline defines the approximate area of map. formation and Paleozoic limestone of the Haji-Gak Formation. magnetite-rich iron formation of Haji-Gak. dolomitic limestone of the Haji-Gak Formation. Formation. formation tectonically intruded by brecciated limestone of the Iron formation is in the foreground.
3000 3200

c w c INTRODUCTION
METERS 5 METERS
ws an This map is a modified version of Geological-structural map of Hajigak Haji-Gak Formation and the Green Schist Formation is unclear because it is ceous, black crystalline limestone is poorly preserved. The entire thickness of INTRUSIVE COMPLEX EXPLANATION OF MAP SYMBOLS
4200 5 ° z= r 4200 w rd iron-ore deposit, scale 1:10,000 (Smirnov and Kusov, 1965). The original on the Haji-Gak-Kharzar fault. Limestones contain abundant fossils. Accord- the Awband Formation varies from 80 to 700 m Complex of small granitoid intrusions
5 z & 5 5 ° w map is one of several that are contained in volume 3 of Soviet report no. ing to the fossil fauna, the age of the Haji-Gak Formation was determined as The complex is composed mainly of plagiogranite massifs and stocks and a Contact—Dashed where inferred
a00-| 2 = a L at00 D 2 u Zz £9 D R0600, which was prepared in cooperation with the Ministry of Mines and Upper Devonian. The thickness of the formation is 900 m Sericite and quartz-sericite schists—Gray and light-gray schistose rock few granodiorites, quartz diorites, and quartz-diorite porphyrites (locally 0.6
e a | METERS oa 5 © © = METERS Industries of the Royal Government of Afghanistan in Kabul in 1965 under with greasy feel and very fine-grained lepidoblastic, granoblastic and relict x 2 km2, generally 150 x 300 m2), with gradual transition of one rock into ———__ Fault or fracture—Showing dip. Dashed where inferred; dotted where
q ; ! < 2 ° E BOE contract number 640, signed on November 24, 1962. This modified map Hgb Limestones—Main part of the Haji-Gak Formation; dark-gray and black, pelitic texture; contains hydromica and sericite (35-80 percent), quartz another concealed
4000 -| 2 ! | gn + 4000 42005 & . < 6 7 Ob 4200 illustrates the geological structure of the HajiGek iron deposit and includes dense, thinly to thickly laminated, aphanitic, in places coarse-grained; (20-45 percent), chlorite (as much as 10 percent), carbonate (as much as :
ES 1 3 3 z ' 1 4 crows avctions of the same area, , P highly reactive with HCl. These rocks are injected by a dense net of white, 15 percent), iron-ore minerals (as much as 10 percent), and coaly material FE] Plagiogranites—Light-gray, fine-grained, massive, with quartz and Strike and dip of bedding
z ' ) g a ' ot The unit colors on the map and cross sections differ from the colors Coarsely crystalline barite veins. Size of limestone grains is 0.05 to 0.1 mm. (as much as 10 percent). Unit is abundant in the western and central area quartz-magnetite-hematite veins; granitic, monzonitic, and in some places Inclined
3900 5 < I + 3900 41005 < < 7 | 1 1 r 4100 ae ‘ 7 Limestone contains subrounded, fine- to medium-grained quartz (3 of study; is host rock for iron-ore bodies or is interlayered within iron orphyritic. Unit contains plagioclase (albite-oligoclase) (50-60 percent).
9 9 Fel ' ' ' shown on the original version. The units are colored according to the color percent), and remnants of shells coated with coarse-grained calcite. Some bodies boat “10 20 t) vthoels ( hoe 15 t) lori (as Banding in intrusive rocks
en_| 3 | soon wl 2 | no and pattemn scheme of the Commission for the Geological Map of the Mca ts comened of captocneeling rool ekte wath soos auartz (10-20 percent, orhocase fas much 2s 15 percent), chloe as °
= = World (CGMW) (hitp://www.ccgm.org). oolitic structure (roundish or spherical patticles 0.1 mm in diameter, which (HAA sericite quartzite—Gray, in some places spotted and laminated, dense, sphene, zircon and ore minerals, and secondary minerals (chlorite, Overturned
This map reproduces the topology (contacts, faults, and so forth) of the lack radial or concentric internal zoning) fractured rocks with quartz and quartz-hematite veins; fine-grained lepido- muscovite, and epidote). Plagioclase alters to saussurite and hornblende Vertical; approximate orientation
3700 4 + 3700 3900 + + 3900 original Soviet map and cross sections and includes modifications based on blastic and granoblastic texture, in parts relict porphyritic texture with alters to biotite, chlorite, and calcite ’
our examination of these documents. Elevations on the cross sections are Limy breccia-conglomerates—Lenses and beds (from 1 to 100 m thick); phenocrysts (0.01-0.1 mm); contains sericite and hydromica (35-85 Strike and dip of schistosity
derived from the original Soviet topography and might not match the newer brownish-gray and lilac-colored, spotted, massive and poorly laminated percent), quartz (15-50 percent), iron-ore minerals (as much as 10 Diabase—Dark-green, fine- to medium-grained, massive rocks cut by . ‘
3600 5 p 3600 3800 5 F 3800 topography used on the current map. We have attempted to translate the rocks; composed of unsorted and poorly rounded pebbles of dark-gray percent), and chlorite, barite, apatite, sphene, and tourmaline quartz-hematite and carbonate veins. Larger bodies are 300 to 600 m long Hypothetical ore contact—Downdip extension may be greater than
original Russian terminology and rock classification into modern English limestones, in parts clayey shale, phyllites, quartzite, and quartz. Pebble size and 50 to 100 m thick; smaller bodies are less than 10 m long and 1 to shown; in cross sections only
3600 + 3500 3700 4 - 3700 geologic usage as literally as possible without changing any genetic or is 0.5 to 10 cm. Cement is composed of microcrystalline quartz aggregate [asia] Sandy quartz-sericite schists (derived from acidic tuffs and 1.5 m thick. Unit composed of plagioclase (central part alters to saussurite ---B--- Boundary of fragmental ore deposit—Letter identifies talus with ore
process-oriented implications in the original descriptions. We also use the and fine- to medium-grained quartz. Clastic content of the cement is from tuffites)—Constitutes the hanging wall of the Haji-Gak deposit, and edges alter to albite) (30-60 percent), secondary minerals (hornblende fragments. In cross sections, boundary is labelled “detrital ore.”
age designations from the original map. 10 to 80 percent. Brown iron hydroxides are highly abundant especially the eastern area; greenish-gray and gray, fragmental (15-25 percent) and chlorite (10-25 percent)), and scarce zoisite, biotite, Fragmental ore deposits are addressed in Smirnov and Kusov (1965)

0
NO VERTICAL EXAGGERATION

Modified from original compilation
of Smirnov and Kusov (1965)

NO VERTICAL EXAGGERATION

Modified from original compilation

of Smirnov and Kusov (1965)

Five photograph sites are shown on the map by symbols keyed by
number to the figures. The photographs were taken by U.S. Geological
Survey scientists Ted Theodore, Tom Mack, and Robert Tucker on
November 20, 2009.

The stereonet map (fig. 9) was derived from a structural analysis of the
strikes and dips of the layering and foliation on the map, which were
examined in several structural domains. The strike and trace of fold axial

Sandy limestones and limy sandstones—Gray and dark-gray, dense platy
rock, weakly reactive with HCI; layers are from 1 to 10 m thick; arenaceous
and pelitic texture; consists of subrounded quartz grains (0.01-0.2 mm).
Cement is composed of fine-grained carbonate including flakes of sericite
and hydromicas, and fine-grained quartz

coarse-grained or thin schistose fine-grained sandstone-like rocks with
fragmental sandy psammitic and relict psammitic texture; contains
subangular and subrounded corroded quartz grains and feldspars (0.1-0.8
mm). Cement contains fine flakes of sericite and chlorite aggregates, and
fine-grained quartz (0.01-0.05 mm), scarce ore minerals, tourmaline,
carbonates, epidote, and apatite

pyroxene, sphene, leucoxene, sericite, and iron-ore minerals. The grain
size is 0.02 to 4.0 mm. Unit includes sills, dikes, and small stocks of
diabase; occurs mostly among greenschists

Quartz diorites and granodiorites—Greenish-gray, massive, fine-grained
rocks with hypidiomorphic texture; contain plagioclase altered to saussu-
rite (oligoclase) (30-40 percent), hornblende altered to biotite, chlorite, and
calcite (5-40 percent), quartz (5-10 percent), biotite (as much as 15

———
PA Ancient pit
e
ree

and Kusov and others (1965)

Brecciation zone

Mylonitization zone

bole dao, TANATION ascont — ~ — = = ~ = = =— = — aa = _ planes were taken from Smirnov and Kusov (1965) and coupled with the oe sae cone the han pera rida not te a Gan corte Date een an oe oer, yom vit rock we we percent), chlorite (as much as 10 percend. orthoclase (as much as 16 USGS helicopter Inning ste
ole density distribution, in percent ,agy . r . 7 : d K : calcite coating along the fractures; is the middle part of the Haji-Gal tuffites)—Dark-green and greenish-gray schistose soft rock, very fine percent), and scarce sericite, epidote, zoisite, calcite, apatite, and ore . . , a
[Jos bearing and plunge of the fold axes within each domain. Formation; beds are approximately 90 m thick; 90 to 95 percent of rock grained, granolepidoblastic, and fragmental fine- to medium-grained and minerals Site Pypeotograph— TP of arrow at point of observation; number keyed
~ | has arenaceous texture. Rock composed of rounded and subangular quartz vitroclastic, with pyrite impregnations; includes sericite (5-80 percent), Granites—Light-gray, coarse-grained (2-4 mm), massive, highly fractured
ay +n grains and scarce feldspars (0.1-0.5 mm). Cement consists of sericite, chlorite (5-70 percent), carbonates (1-15 percent), iron-ore minerals rocks with granitic texture, in parts porphyritic; contain microcline-perthite Ore body—As discussed in Smirnov and Kusov (1965) and Kusov and
hydromica, iron hydroxides, and calcite (2-10 percent), en curt 630 percent) (0.02-0.04 pe. te parts (50-60 percent), quartz (25-35 percent), oligoclase (15 percent), biotite others (1965)
contains scarce biotite flakes and tourmaline, and secondary carbonate (as much as 4 percent), and scarce fluorite; unit includes brecciated zones.
HG os Limy argillaceous shales—Dark-gray, unconsolidated, and reactive with minerals. Tale occurs along the contact with ore bodies. Dissolution of the Granites occur as large intrusions in the central part of Koh-e-Badras ridge Road
eer . sean DESCRIPTION OF MAP UNITS HCI; constitutes scarce thin layers among limestones of the Haji-Gak pyrite occurs during exposure, creating the porous appearance (cavern Quartz porphyrites—Light-gray, massive, fine-grained rocks with porphy- Town or village
Strike = 459, Dip = 43:4 (RHR) Formation. Rock has sandy, fragmental, and pelitic texture; is composed of porosity) and bleaching of the rock ritic texture; groundmass is fine-grained granite with quartz phenocrysts.
Ha os CT Te % _| Flood-plain and alluvium deposits (Holocene)-Pebbles, boulders, talus, hydromica and sericite (65 percent) and carbonates (30 percent), with Rocks contain quartz, orthoclase, and oligoclase. Unit consists of dikes and
and abundant fragments of iron ore. The upper part of the flood-plain mixture of fine- to medium-grained quartz and coaly particles [am | Marble and dolostone—Occur near ore bodies and contain veins (0.5-50 m) in exo-contact (out of contact) intrusion
. | 25-30 deposits consists of peat bogs 0.2 to 1.0 m thick. The thickness of these carbonate-chlorite-sericite schists. On the contact with ore bodies these REFERENCES CITED
deposits does not exceed 20m ; a Green Schist Formation (Middle and Lower Paleozoic}—Located in a rocks contain large amounts of highly silicified pyrite, magnetite, and
|| 330 Eluvium-diluvium deposits (colluvium)—Loamy sand including iron-ore hangi ll in the Haji-Gak d it. Over dh dational contact hematite impregnations. Rocks are gray and dark-gray, laminated, fine- to HYDROTHERMAL ALTERATION AND METASOMATISM ; ;
0930 fragments, Mostly 0.2 to 0.5 m thick, but as much as 17 m thick on anging wall in the Haji-Gak deposit. Overlies and has a gradational contac medium-gramned, dense, and massive, are weakly reactive with. FCk « Sericitization and silicification Occur in the host rocks for ore bodies: Kusov, I.K., Smimov, M.S., and Reshetniak, V.V., 1965, Report of the results
} oderately dipping sl with the Awband Formation. Composed of plagioporphyrites and quartz i i ‘ ‘ inerals of ° of prospecting-survey and reconnaissance works for iron ores in central
— Boundary of data- Strike = 67.1, Dip = 53.6 (RHR) \ moderately dipping slopes . . . ye . . ° contain carbonates (10-95 percent), quartz (3-75 percent), ore minerals sericite, quartz-sericite schists, quartz dolomites, microquartz, acidic tuffs,
fathering area from Pole trend ~ 337-1, plunge =36.4 plagioporphyrites, with mylonitized and brecciated limestone as thick as 5 m a : ; Afghanist ith Iculati Hajigak deposit for 1963-1964:
Which eath stereonet iiiy teas LU H at the base. The boundary between the top of the Green Schist Formation (2-40 percent), and scarce sericite and barite and volcanic rocks. Sericitic quartz and quartzite (1-70 m thick) usually ghanistan with reserve calculation on Hajigak deposit for
was derived : \ 3} Morainal deposits (Quaternary)—Talus with small amounts of loamy sand : m we i i i it i Kabul, Ministry of Mines and Industries of the Royal Government of
f includi hyri d ite boulders (2 m in di he left and the bottom of the Haji-Gak Formation is unclear because it is on the . . . . . occur on the contact with ore bodies or near ore bodies. Unit includes 7 y vy
including porp! wyrite an granite | oulders ( 2m in liameter) on the le’ Haji-Gak-Kharzar fault. The rocks are hydrothermally altered in some places Volcanic Flow—Plagioporphyrites occurring among rocks of the hanging fractured quartz zones (15 m wide, 350 m long) developed in volcanic Afghanistan, report no. R0600, v. 1, report text, 156 p. [Prepared by
Strike = 57.9, Dip =47.7 (RHR) slope of the Qalu River valley. Unit <20 m thick and contain lenses and veins of iron ore. The thickness of the entire Green wall and containing tabular and lenticular forms of iron-ore bodies (10-50 rocks of the Green Schist Formation V/O Technoexport U.S.S.R. for the Ministry of Mines and Industries of the
Pole trend = 327.8, plunge I . . 7 . . Schist F tion is 700 m. Volcani k hist d altered int m thick); unit is greenish-gray, spotted, poorly laminated and cut by hema- Royal Government of Afghanistan under contract no. 640.)
1 | aesraon Q%g | Glaciofluvial drift (Quaternary)—Till and talus with some loamy sand sin par aga Aaa iaoraglesi ape ominn mer Bulribianien tite and quartz-hematite veins. Unit has porphyritic, fine-grained texture; > Carbonatization—Occurs in rocks with carbonate phenocrysts and veins;
\ including poorly sorted granite and porphyrite boulders (1-1.5 m in quartz-chlorite and quartz-chlorite-sericite schists by regional and contact . . . i"
Bike HB. Dip SAR } eng eee tie ni metamorphism contains oligoclase, and quartz phenocrysts, The plagioclase phenocrysts fil fractured-quartz zones and forms secondary quartz-carbonate rocks: Smirnov, M.S., and Kusov, I.K., comps., 1965, Geological-structural map of
s Polerend = 3182, plunge / diameter). Thickness of these deposits is as much as 50 m in the Qalu are highly altered and replaced by scapolite, chlorite, and carbonates. contains the inclusions of carbonates (siderite, dolomite, and calcite) in host Hai ak iron-ore de sit, in Kusov. IK Smirnov, MS., and Reshetniak
f' River valley @sq | Quartz-chlorite-sericite and quartz-chlorite schists (derived from volca- Groundmass is vitroporphyric, very fine grained felsitic or glassy, with fine rocks for ore bodies. The carbonatization and scapolitization is in volcanic vig posit, » LK, ) M.S., and :
| nic rocks)—Greenish-gray and dark-green schistose, poorly laminated grains of plagioclase, feldspars, quartz or glass and newly formed ore rocks (carbonatized and scapolitized plagioporphyrites);carbonatized vv. Report of the results of Prospecting survey and reconnaissance Works
Kharzar Formation (Lower Carboniferous)—Located in the southern part rocks injected by quartz, magnetite-hematite, quartz-chlorite-hematite and minerals, scapolite, and carbonates. On the contact zone with ore bodies breccia zones developed near ore bodies are from 0.5 to 15 m thick and er ron ores in central Aighanistan with reserve ‘calculation on Helga
sean of the HajGak ore field and composed of clayey and silty shale interlayered carbonate veins with elit porphyritie texture, Phenosrysts (hom 0°3 to 2.5 the plagioporphyrite has been altered to sericite-quartzite or quartzite from 5 to 200 m long; zones include phyllonites and quartz-carbonate deposit for 1963-1964: Kabul, Ministry of Mines and Industries of the
with sandstone and quartzite. Unconformably overlies the Hajek Forma- mam) of plagioclase (oligoclese andesine); in places pheroerysts are made of having thickness of 0.3 to 10 m rocks Royal Government of Afghanistan, report no. R0600, v. 3, one sheet, scale
tion. The thickness is probably more than 500 m quartz and dark-colored minerals and are entirely replaced by aggregates of 1:10,000. [Prepared by V/O Technoexport U.S.S.R. for the Ministry of
COMPLEX OF ALKALINE ROCKS . . A
chlorite, carbonate, and epidote. Plagioclase phenocrysts are replaced by Kab Formation (Middle and Lower Paleozoic)—Occupies footwall of the K hn Ligh fi . ' fissi ks with Mines and Industries of the Royal Government of Afghanistan under
Kha Clayey and silty shale—Most abundant rock in the Kharzar Formation; gray sericite, quartz, epidote, carbonate, chlorite, and pelite. As a result of Haji-Gak deposit. The thickness of the Kab Formation exceeds 1,200 m. saneaanet ig) ry. fine-grained, Ibite (CO Issve a ° “O85 contract no. 640.]
and dark-gray, unconsolidated fissile rocks with quartz veinlets; has cataclastic processes the phenocrysts are broken into pieces and displaced. The unit “schistic subsilicic effusions” on the original map legend is not trachytic, Darly relict foxes contain albite ( percent), 3 cite (
fragmental, pelitic, and fine- to medium-grained texture; composed of Greenschists based on their mineralogical content are related to plagiopor- shown because it was not located on the original map Percent), glass (as much as 10 percent), iron-ore minerals (2-4 percent),
aea0n hydromicas, sericite, carbonates, chlorite, and iron hydroxides with mixture phyrites and quartz-plagioporphyrites, and with volcanic rocks they and zoisite and sericite (1-3 percent); appear in branching veins (5 m thick)
Strike + /43.4, Dip = 603(RHR) of angular, fine to medium quartz grains and feldspar. The content of clastic compose the main part of the Green Schist Formation; are especially Sandy quartz-sericite schists (derived from acidic tuffs and and in crosscuiting diabase stocks di ed, medi ined
Pole trend + 3134, plu pay material is 60 percent widely developed near the Haji-Gak-Kharzar fault; gradually transition from tuffites)—Dark-gray and gray, sand-like, thinly layered schistose rocks Metasomatic car atites Gray and light-gray, spotted, mi lum-graived,
‘one rock into another with relict psammitic, vitroclastic texture; contain subangular quartz (70 massive rocks with relict porphyritic, prismatic texture; contain oligoclase
NI Khs | Sandstone and quartzite—Sandstone is thickly (as much as 10 m) interbed- percent) (0.1-0.8 mm) and feldspar (30 percent), and cement mass from (25-30 percent), carbonates (30 percent), quartz (as much as 5 percent),
> ded with clayey and silty shales; is gray, fine-grained, massive or laminated; ss | Quartz-sericite schists (formerly tuffs and tuffites)—Gray and brownish- recrystallized fragments of glass, sericite, chlorite, iron hydroxides, and and Scares muscovite, rutile: apatite, and ore minerals: occur in stocks and
injected by dense net of quartz veinlets. Sandstone has sandy, fragmental, gray schistose rocks with fragmented fine-grained lepidoblastic and fine quartz grains. Is the most abundant rock type in the Kab Formation lenses. They appear in three places: loahe abases, hott my
3#°9830'N fine- to medium,-grained texture; is composed of poorly sorted, subrounded fragmented fine- to medium-grained textures; contain subangular grains Phyllites—Dark-gray and black, thinly layered schistose rocks with very gancsiones, and among sandy quartz sericite schists (derived from tuffs and
Strike = 75.0, Dip = 85:0 (RHR) quartz grains (90 percent), feldspars (10 percent), rarely tourmaline and (from 0.01 to 0.1 mm). Unit composed of quartz (70 percent) and feldspars fine grained lepidoblastic, in places relict pelitic texture; contain sericite tuffites)
Pole avend./345., plunge = 24.0 zircon. Grain size is mostly 0.5 to 1.0 mm, but is as much as 1.0 to 1.5 (28 percent); in parts contains zircon and tourmaline. Cement composed of (35-70 percent), chlorite (as much as 10 percent), quartz (15-35 OSTMAGMATIC S
7 mm. The content of the cement is hydromica and sericite (75 percent), fine microcrystalline aggregates of sericite, hydromicas, chlorite, quartz, carbon- percent), coaly material (as much as 10 percent), iron-ore minerals, Bari ins—A\ POSTMA\ M. TIC EN A F ‘
zirur) —)-\) —. / fragments of quartz (20 percent), and iron hydroxides (5 percent). Quartzite ate, and ore minerals. Unit appears in the upper part of the Green Schist calcite, and iron hydroxides. Form thin interlayers in sandy quartz-sericite arite veins—Appear near ore bodies within the Awband Formation as
136.5-Plunge = 23.8. /) constitutes beds within sandstones in the Kharzar Formation; is gray and Formation in lenticular layers as much as 10 m thick schists of the Kab Formation and derived from clayey material veins and lenses; occur in fracture zones and fissures; thickness generally
/ : - Le: light-gray, dense, massive rock with quartz veins, with fragmental sandy, 0.1 to 0.5 m, as much as 1.0 m; form vein nets up to 100 m long; contain
L ~> owns ed Dip Scr RMEI 304 30N granuloblastic texture. Quartzite is composed of quartz grains (0.1-0.5 : . . . [ion] Marble and dolomite—Gray and dark-gray coarse tabular rocks, reactive eae calcite and pyrite. Number refers to data in Smirnov and Kusov
Pole trend = 820.2, plunge =28.9 mm) and scarce sericite and iron hydroxides Awband Formation (Middle and Lower Paleozoic)—Abundant in the in HCl. Unit has relict pelitic texture at some places. Carbonate grains (1965)
/ middle part of the Haji-Gak iron deposit. Overlies and has a gradational 7 . eo cy
. ar (0.001-0.5 mm) are composed of calcite and dolomite-ankerite; eee . . . . . .
contact with the Kab Formation. The Awband Formation is hydrothermally 7 | calc " Semi-oxidized—Hydrogoethite-semi-martite, hydrogoethite-hematite-semi-
i . : c h carbonates (50-80 percent), sericite (2-35 percent), quartz (1-15 ° ite-sem
laji-Gak Formation (Upper Devonian)—Located in the southern part of altered and hosts tabular and lenticular forms of iron-ore bodies. The age of : : . . martite, and carbonate-semi-martite ores
i a , " 7 . . percent), and iron oxides. Unit forms lenticular interlayers as much as 5 . |
the ore field of the Haji-Gak iron deposits. The type of boundary between the the suite was not determined because the rugose coral found in carbona- to 15 m thick son L } ;
- - - - - - [mm] Non-oxidized—Pyrite-magnetite ores and carbonate-magnetite ores ma CL Index map outlining USGS-Afghanistan
68°10 Be20E ZINE eee 8320E Bera 68°430E BSE 6e5I0E BBG C830 BB70E ETE eee BeBIE eae ~-L- = mineral project areas. Area of this report
20N shown in red.

Figure 9.—lllustration showing poles to bedding (black dots) and pole density distribution in percent (contour lines) in the map area. Stereonets are the product of a structural analysis of the strikes and dips of the
layering and foliation on the map, which were analyzed in several structural domains. The strike and trace of fold axial planes were taken from Smirnov and Kusov (1965) and coupled with the bearing and plunge
of the fold axes within each domain. These values are in degrees. Stereonets were constructed using lower hemisphere; red numbers 1, 2, and 3 show best cylindrical fit. Contacts and faults are shown subdued.

Geologic Map of the Haji-Gak Iron Deposit, Bamyan Province, Afghanistan, Modified From the 1965 Original Map Compilation of M.S. Smirnov and I.K. Kusov

. ISBN 978-1-4113-3179-2
Compiled by

Karine M. Renaud, Robert D. Tucker, Stephen G. Peters, Will R. Stettner, Linda M. Masonic, and Thomas W. Moran 9 Ht,
2011 2} Printed on recycled paper

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