GEOS1111 Economic Minerals (Name-Info)

Question 1

Arsenopyrite

Answer 1

Grey/Metallic, <6.5, Ore of As

Question 2

Galena

Answer 2

Grey/Metallic >6.5, Ore of Pb

Question 3

Sphalerite

Answer 3

Grey/Metallic, >6.5, Ore of Zn

Question 4

Molybdenite

Answer 4

Grey/Metallic, Massive/Foliaceous, Ore of Mo

Question 5

Graphite

Answer 5

Grey/Metallic, Bladed

Question 6

Stibnite

Answer 6

Grey/Metallic, Bladed, Ore of Sb

Question 7

Pyrrotite

Answer 7

Gold, <6.5, Dark grey streak, Magnetic

Question 8

Chalcopyrite

Answer 8

Gold, <6.5, Greeny-Black Streak, Main Ore of Cu

Question 9

Pyrite

Answer 9

Gold, >6.5, Cubic Habit

Question 10

Garnierite

Answer 10

Greenish

Question 11

Chrysocolla

Answer 11

Greenish

Question 12

Malachite

Answer 12

Greenish

Question 13

Talc

Answer 13

Pretty well opaque, 1, Soapy feel

Question 14

Magnesite

Answer 14

Pretty well opaque, Earthy lustre

Question 15

Halite

Answer 15

Translucent/Transparent, White, <2.5, Cubic Cleavage

Question 16

Gypsum

Answer 16

Translucent/Transparent, White, <2.5, 4 cleavages 1 perfect

Question 17

Baryte

Answer 17

Translucent/Transparent, White, Tabular habit

Question 18

Flourite

Answer 18

Translucent/Transparent, Variable Colour, Octahedral cleavage

Question 19

Wolframite

Answer 19

Vitreous/Adamantine and Darkish, >6.5, rhombic cleavage, Ore of W

Question 20

Siderite

Answer 20

Vitreous/Adamantine and Darkish, >6.5, 1 well defined cleavage, Ore of Fe

Question 21

Bornite

Answer 21

Vitreous/Adamantine and Darkish, >6.5, Indiscernible cleavage and peacock tarnish, Impure Cu Ore

Question 22

Cassiterite

Answer 22

Vitreous/Adamantine and Darkish, adamantine lustre, euhedral habit

Question 23

Corundum

Answer 23

Vitreous/Adamantine and Darkish, Hardness 9, Sapphite/Ruby

Question 24

Pyrolusite

Answer 24

Black/Dark Grey, Earthy, Sub-metallic, 2 Perfect @90, Mn Ore