GEOS1111 Economic Minerals (Info-Name)

Question 1

Grey/Metallic, <6.5, Ore of As

Answer 1

Arsenopyrite

Question 2

Grey/Metallic >6.5, Ore of Pb

Answer 2

Galena

Question 3

Grey/Metallic, >6.5, Ore of Zn

Answer 3

Sphalerite

Question 4

Grey/Metallic, Massive/Foliaceous, Ore of Mo

Answer 4

Molybdenite

Question 5

Grey/Metallic, Bladed

Answer 5

Graphite

Question 6

Grey/Metallic, Bladed, Ore of Sb

Answer 6

Stibnite

Question 7

Gold, <6.5, Dark grey streak, Magnetic

Answer 7

Pyrrotite

Question 8

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

Answer 8

Chalcopyrite

Question 9

Gold, >6.5, Cubic Habit

Answer 9

Pyrite

Question 10

Greenish

Answer 10

Garnierite

Question 11

Greenish

Answer 11

Chrysocolla

Question 12

Greenish

Answer 12

Malachite

Question 13

Pretty well opaque, 1, Soapy feel

Answer 13

Talc

Question 14

Pretty well opaque, Earthy lustre

Answer 14

Magnesite

Question 15

Translucent/Transparent, White, <2.5, Cubic Cleavage

Answer 15

Halite

Question 16

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

Answer 16

Gypsum

Question 17

Translucent/Transparent, White, Tabular habit

Answer 17

Baryte

Question 18

Translucent/Transparent, Variable Colour, Octahedral cleavage

Answer 18

Flourite

Question 19

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

Answer 19

Wolframite

Question 20

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

Answer 20

Siderite

Question 21

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

Answer 21

Bornite

Question 22

Vitreous/Adamantine and Darkish, adamantine lustre, euhedral habit

Answer 22

Cassiterite

Question 23

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

Answer 23

Corundum

Question 24

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

Answer 24

Pyrolusite