Quiz 2 STUDY Flashcards
1
Q
Calcite
carbonate
A
CaCO3
soft; white
ig, sed, meta
2
Q
Dolomite
carbonate
A
CaMg(CO3)2 soft; white shell fragment look; grouped; tan sed; limestones, dolomites meta; high T meta, low T hydroT veins
3
Q
Azurite
carbonate
A
Cu3(CO3)2(OH)2 soft; light blue dull, uneven bright blue color sed; meta; secondary min in oxidation zone of Cu deposits
4
Q
Siderite
carbonate
A
FeCO3 soft; white/brown vitreous to dull; brown uneven ig, sed, meta; sed beds, med to low T hydroT, peg
5
Q
Malachite
carbonate
A
Cu2CO3(OH)2 soft; light green dull, bright green uneven sed, meta; secondary min in oxidation zone of Cu deposits
6
Q
Rhodochrosite
carbonate
A
MnCO3 soft; white vitreous; pink uneven ig, sed, meta; hydroT veins associated with sulfides; peg
7
Q
Gypsum
A
CaSO x 2H2O soft; white long crystals uneven colorless, brown, grey dull to vitreous sed; deposits, clay; ig; traprock
8
Q
Anhydrite
A
CaSO4 soft; white dull to vitreous uneven white/grey sed; rock layers, salt domes; ig traprock
9
Q
Celestite
A
SrSO4 soft larger crystals light blue/colorless sed; limestone
10
Q
Barite
A
BaSO4 soft; white vitreous heavy uneven white/orange sed, meta
11
Q
Forsterite
olivine group
A
Mg2SiO4 hard uneven; small crystals vitreous green ig; mafic to ultramafic
12
Q
Pyrope
garnet group
A
Mg3Al2Si3O12 vitreous clear cs dark red ig; intrusive, meta; high P rocks
13
Q
Grossular
garnet group
A
Ca3Al2Si3O12 larger crystals hard good cs vitreous pink, green meta; contact, skarns
14
Q
Zircon
A
ZrSiO4 hard med to large crystals vitreous uneven grey/clear/light purple/brown ig; granite peg, meta; high grade
15
Q
Andalusite
Al silicate group
A
Al2SiO5
cross section crosses
brown with tannish white, yellowish brown
ig; granite peg, sed; alluvial deposits, meta; hydroT replacement deposits
16
Q
Kyanite
Al silicate group
A
Al2SiO5 splintery elongated; diff directions vitreous light blue to darker ig; granite peg, meta; schists/gneisses
17
Q
Sillimanite
Al silicate group
A
Al2SiO5 splinteryish; fibrous slightly vitreous, grainy uneven grey/brown/black meta; schists/gneisses
18
Q
Staurolite
A
Fe2Al9Si4O22(OH)2 perpendicular crosses hard dull, uneven brown/black meta; schists/gneisses
19
Q
Sphene (titanite)
A
CaTiSiO5 vitreous can scratch glass some conchoidal brown; kind of translucent ig; peg, sed, meta; skarns, contact
20
Q
Topaz
A
Al2SiO4(F,OH)2 hard vitreous good cs light brown, transparent ig; granite peg
21
Q
Fayalite
olivine group
A
Fe++2SiO4 hard uneven; small crystals vitreous green ig; mafic to ultramafic
22
Q
Almandine
garnet group
A
Fe3Al2Si3O12 hard vitreous conchoidal dark red, brownish parts ig; peg, sed; alluvial fans, meta; contact
