fucking rocks Flashcards by Ellen Marion | Brainscape

Q

Covellite

A

CuS

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Q

Chalcopyrite

A

CuFeS2

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Q

Pyrrhotite

A

(Fe(1-X)S)

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Q

Pyrite

A

FeS2

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Q

Marcasite

A

FeS2

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Q

Arsenopyrite

A

FeAsS

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Q

Chalcosite

A

Cu2S

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Q

Hematite

A

Fe2O3

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Q

Corundum

A

Al2O3

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Q

Bauxite

A

complex of aluminous hydroxides

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Q

Ilmenite

A

FeTiO3

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Q

Magnetite

A

Fe3O4

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Q

Rutile

A

TiO2

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Q

Chromite

A

FeCr2O4

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Q

Goethite

A

FeO(OH))

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Q

Pentlandite

A

(Fe, Ni)9S8

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Q

What looks like a peacock

A

covellite

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Q

What has a greenish brown streak and looks like cheap gold spraypaint

A

Chalcopyrite

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Q

What is the hardness of covellite

A

1.5 - 2

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Q

what is the streak of chalcopyrite

A

greenish

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Q

what is the colour of pyrrhotite

A

bronzish

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Q

What is the hardness if pyrrhotite

A

low hardness

Q

What is the streak of pyrite

A

greenish black

Q

What is described as fools gold

A

pyrite

Q

What is the habit of pyrite

A

cubic

Q

What is the crystal that looks like a metallic fishscale

A

marcasite

Q

What crystal looks like pyrite but darker

A

arsenopyrite

Q

What is the specific gravity of arsenopyrite

A

high specific gravity

Q

What is the hardness of chalcosite

A

very soft

Q

What is the tarnish that may be in chalcosite

A

purplish

Q

What is the rock that has a greenish streak, is massive and may be a bit purple

A

Chalcosite

Q

What rock looks “lavaish”

A

Hematite

Q

What is the streak of hematite

A

red

Q

What colour is hematite

A

black to red with maybe a but of steel grey

Q

what is special about hematite

A

magnetic dusk

Q

What is the hardness of corundum

A

9

Q

What is the shape that corundum takes and why

A

hexagons because it had a trigonal crystal system

Q

What crystal is gonna be hexagon

A

corundum

Q

What does bauxite look like

A

reddish orange rock with spots

Q

What is the hardness of 1-3

A

bauzite

Q

What streak is ilmenite

A

black

Q

What is special about ilmenite

A

It is weakly magnetic meaning that a magnet will skip when dragged across it

Q

What is magnetites streak

A

black

Q

What is magnetites habit

A

either cubis or massive

Q

What is rutiles lustre

A

submetallic to adamentine

Q

What are the ways rutile might show up

A

Weird tabular looking things kinda purply red, might be clear rock with gold wires in it, might be a dark red rock with orangey lines (most likely???????)

Q

What is the streak of chromite

A

dark brown

Q

What is the lustre of chromite

A

metallic to submetallic

Q

What would you describe chromite as

A

darker rock with a bit of lustre

Q

What is the colour appearance or goethite

A

dark rock (black) with some orange shit on it

Q

What is the streak of goethite

A

ORANGE mf

Q

What is the streak of pentlandite

A

light bronze or brown

Q

What is the general appearance of pentlandite

A

darker grey rock with some goldish or silver shimmer shit on it

Q

Is pentlandite magnetic

A

nope