Minerals Flashcards by Nicole Pyszka | Brainscape

Q

Fingernail

A

2.5

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Q

Penny

A

3

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Q

Knife

A

5.5

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Q

Glass

A

6

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Q

Ceramic

A

7

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Q

Opaque Diaphaneity

A

All light is reflected (Metallic Minerals)

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Q

Translucent Diaphaneity

A

Some light absorbed (most common)

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Q

Transparent Diaphaneity

A

Most light transmitted through

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Q

pyrite - use

A

“fool’s gold,” sulphuric acid

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Q

chalcopyrite - use

A

copper ore, wire

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Q

galena - use

A

lead ore, car batteries

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Q

sphalerite - use

A

zinc ore, galvanizing iron

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Q

magnetite - use

A

iron ore, steel

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Q

talc - use

A

talcum powder

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Q

gypsym - use

A

plaster, cement, wallboard

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Q

calcite - use

A

flux in steel making, cement (lime)

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Q

halite - use

A

road salt, sodium/chlorine

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Q

graphite - use

A

lubricant, steel hardening, high tech metal

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Q

muscovite - use

A

windows, insulators

Q

biotite, amphibole, pyroxene - use

A

rock forming mineral

Q

orthoclase - use

A

gemstones, ceramics

Q

plagioglase - use

A

gemstones

Q

quartz - use

A

gemstones, glass, electronics

Q

olivine - use

A

gemstones

Q

clevage types

A

basal, 2 directions(90 or not), cubic, rhombohedral, none

Q

olivine

A

green

Q

graphite

A

grey, basal

Q

galena

A

silvery blue, opaque, cubic

Q

sphalerite

A

brown grey, more than 3

Q

chalcopyrite

A

yellow gold, opaque

Q

pyrite

A

opaque

Q

magnetite

A

dark grey, opaque

Q

biotite

A

golden black, basal

Q

muscovite

A

silvery beige, transparent, basal

Q

plagioclase

A

white grey, 2@90

Q

orthoclase

A

pink, 2@90

Q

pyroxene

A

black-green, hints of yellow-brown, 2@90

Q

amphibole

A

dark grey, 2, not 90

Q

quartz

A

white, transparent

Q

halite

A

smoky white, transparent, cubic

Q

calcite

A

pink beige, rhombohedral

Q

gypsum

A

transparent white, basal

Q

talc

A

dirty white, basal

Q

ferromagnesium (dark) silicates

A

olivine, pyroxene, amphibole, biotite

Q

non-ferromagnesium (light) silicates

A

muscovite, feldspar, quartz

Q

feldspar

A

K - Orthoclase, Ca-Na - plagioclase