Ashland tidings. [volume] (Ashland, Or.) 1876-1919, 1916-02-28

ASHLAN
ondary mineral sericite, derived from
feldspar. Uses: For electrical in
sulator; for stove door windows; fol
spangling paper and fabrics; cover
ing for steam boilers and pipes; fol
decorative interior work; to orna
ment porcelain and glassware; in cab
leo printing! as lubricant; as an
absorbent of nitroglycerine; in manu-
facture of smokeless powder.
Pyrite (iron pyrites, FOOLS gold)
Bradon, Upper App,egate, Opp, Ash
land, Tin Pan, Gold Hill and Jack
sonville districts. Occurs as a vein
mineral; as a secondary mineral in
igneous rocks bordering ore deposits;
in metamorphic rocks as bedded de.
posts; is found as contact mineral
in the ores at contacts between sedi.
mentary and igneous rocks. Uses:
Manufacture Of sulphuric acid. Gold
bearing pyrite forms gold ore; al
times also a low grade of copper when
copper bearing.
Pyrolusite (gray and black oxide
of manganese), Ashland and Gold
Hill districts. Occurs in residual
clays formed by the breaking down OF
limestone, giving a concentration OF
the manganese oxide; along seams in
rocks, occurring as a secondary min
eral in gold veins; as an alteration
product of rhodite and rhodochrosite
Uses: Ore of manganese; as a de-
colorizer in glass manufacture (col-
ors glass purple); manufacture Of
electric dry cells; manufacture OF
chlorine and oxygen; as an oxidizing
agent.
Pyrrhotite (magnetic pyrites)
Bradon, Jewet Corporal G. mines
Ashland, Upper Applegate and Gold
Hill districts. Occurs in basic ige-
nous rocks; as a vein mineral; in
crystalline limestone. Uses; Nickel
bearing pyrrhotite is an ore of nickel.
Quartz, Ashland, Upper Applegate,
Jacksonville, God Hill districts (oc-
ours as gangue mineral Medford,
Foots creek and Watson Tin black
sand). Occurs in GRANTEES, syenites
and other igneous rocks; as a gangue
mineral in ore veins; In sandstones
and quartzites; in river and beach
sands; as lining of geodes; as q
secondary mineral in various rocks
Uses: Rock crystal for optical in
struments; rock crystal, amethyst
and smoky quartz for ornamental pur.
poses; quartz sand for glass making;
with coke to make carborundum; as
sandstone for homes and grinding
stones; fused in electric furnace for
making heat-resisting silica ware;
as a flux in metallurgy.
Silver, Applegate, Foots creek and
Jacksonville districts (placer and
lode), Forest creek (placer). Occurs
in veins in free state and combined
with other minerals. The uses are
commonly known.
Spha,erite (zinc blende, black jack,
false galena), Upper Applegate and
Gold Hill districts. Occurs in veins
associated with various minerals, es-
pecially galena; occurs also in sedi-
mentary rocks as an accessory metal.
Use Ore of zinc.
Stibnite, two mi 'es north of Wat
kins in fractures of greensboro, Ash
land district in Barron mine, and also
80 miles east of Medford. Occurs in
veins with sphalerite, pyrite, cinna-
bar, galena and realgar. The gangue
is composed of quartz, barite or cal
cite. Uses; Source of antimony,
which is used in the manufacture of
safety matches, fireworks, etc.
Tale (talcum), near Woodville.
Occurs as a secondary mineral formed
by the alteration of silicates like SER
pentine, actinolite, etc; in tale schists
and soapstones. Uses: Soap, talcum
powder, French chalk and fibrous
material in paper manufacture.
Zinc, Ashland, Weimer, Gold Hill,
Jacksonville Tin black sand). Occurs
in sands and graves; in igneous
rocks, especially syenites and soda
GRANTEES.