Arizona republican., 1909-02-24

lilS SCliOOl Ol (Alt1 237.
 ALUM.
 In Alum Canyon, Santa Cruz coun- ty, a few miles west of Patagonia. in crusts and efflorescences, but not in | large deposits The whole mountain | through which the arroyo, or canyon. | is cut is colored a brilliant red by the abundance of diffused hematite. and a portion of the so-called alum i is doubtless in part iron sulphate. ALUNITE. 1 Hydrous SuIphate of Aluminium and | Potassium, Sulphur trioxide 3S.6, Aluminium 37.O, Potash IA, Water 130
 In the main adit level of the Ryerson mine at Morenci in a narrow seam between shale and porphyry forming white earthly mass like kaolin.
 AMPHIBoLE. l Known also as Hornblende, and as ! TremoIite. A siIicate of calcium and magnesium with alumina and iron.
 It occurs with the alteration pro- ducts of dolomite and limestone in close association with garnet and other silicates. No occurrence of large and we'll formed crystals suit able for mineral collections is known | in Arizona.
 In the form of Tremolite it may be found in the metamorphic dolomitic ! limestone of Morenci and Metcalf. It i there weathers to chloritic and ser pentinoid minerals, and sometimes to asbestos.
 ARGENTITE.
 Silver SuIphide. Silver Glance. At most of the silver mines of the southwest, notably at the Cerro Colo rado, the Heintzelman and the Dar- win or Constitution lode when they were first opened and actively work ed. (See Silver glance) AURlcHAlCITE. Basic carbonate of zinc and copper. On the assumption that the ratio of the zinc and copper Is as 5.2 the for mula requires: Carbon dioxide 16.1, zinc oxide 53.2, cupric oxide POS, water 99
 It has been known as brass ore, from the fact that the alloy, brass, may be smelted from it without the addition of either copper or zinc. The ore anciently known as auriehalcum was regarded by Pliny as the best for brass.
 It occurs at the Copper Queen mine, Bisbee. COchise county, and is reported by Dana to occur also at the Santa Caterina mountains (Catalina) in fine specimens. These specimens were probably from the old Apache camp. now Leatherwood's in the northern part of the range
 AZURITE. Basic cupric carbonate; carbon di oxide 25.6. cuprio oxide 9s.2. water 5.2.
 Occurs in large masses of aggre- gated crystals in close associatinn with the green carbonate, malachite. native copper and red oxide in the Copper Queen mine at Bisbee, Cochise county. Some of the various complex forms and notifications of the crys- tals have been drawn by Burlington, figures (7-14) in Dana's Mineralogy.
 ANGLESITE.
 Lead Sulphate: Sulphur trioxide 26.4, lead oxide 73.6.
 Not unusual in the lead mines of the territory. but not in good crystals but generally in the amorphous lIOlH d Ol lllc oxidation of the sulphide, often hold ing a kernel of unchanged galena
 Mammoth mine, Shultz. Pima coun- ty. in the earthly form not crystalized. Also in the Lost Gulch gold mine, near Globe, surrounding nodules of galena, the direct product of the oxi- dation of the sulphide.
 ANTIMONY GLANCE.
 SuIphide of Antimony. See Stibnite.
 ARGENTITE.
 Silver Sulphide; SuIpher 12.9. silver S71. The Silver King mine in Pinal county Is one of the most interesting and important localities of this spe- cies. In fact the presence of rich black Jumps of this ore in the soil led to the immediate appreciation and of this property. These Jumps or small nodular masses of the rich sulphide easily cf with a knife, were picked up along the croppings and were favorite pocket pieces with the prospectors. This "petanqus" ore continued to be found as the vein was opened from the surface down. ward to the third and fourth levels of the mine and gave an unusual de- gree of value to the ore. Is was easily recognized by it's malleability, sectility, and its high content in sil- yer; some of the early assays gave as high as 70 per cent of silver. A careful assay of a selected sample of the mineral gave S2.S0 per cent of silver; no copper. Specific gravity, 6S28. (Vide Silver King report 1SS3.)
 ASBESTOS. A fibrous- variety of hornblende or actinelite. A silicate of lime with out alumina. Well known as a fire resisting material. Much of the fine silklike fibrous mineral from Grand Canyon of Arizona and commonly known as asbestos is the mineral chrysotile to which reference is made. In the form of matted fibers asbestos is known as mountain WOOL or mountain leather" Specimens of this nature have been sent to the Territorial Museum from near Clifton by Colonel Egan and from near Naco by Wm. Hogan.
 The metamorphic rocks of the Cliff ton Morenci district contain asbestos as a result of hydration according to Lindgren. It is found near the Ari- zona Copper company's hospital at Morenci and in pieces over a foot