geology minerals

Question 1

olivine

Answer 1

green, nonmetalic, scratches glass

Question 2

pyrite

Answer 2

fools gold, brass yellow scratches glass
dark grey streak

Question 3

magnetite

Answer 3

magnetic, dark grey to black
dark grey streak, scratches glass

Question 4

hematite

Answer 4

silver specular appearance
dark red streak
red to brown streak,does not scratch glass

Question 5

chalcopyrite

Answer 5

color: brass yellow, brass green
streak: dark grey
glass: no

Question 6

galena

Answer 6

color: silver and grey, high specific gravity
streak: dark grey
glass: no

Question 7

graphite

Answer 7

color: black to dark grey, rubs off on hands
streak: dark grey
glass: no

Question 8

sphalerite

Answer 8

color: brown to yellow, may be shiny
streak: light yellow, smells like sulfur
glass: no

Question 9

copper

Answer 9

color: tarnishes dark, rocky looking
brown or green
glass: no

Question 10

quartz

Answer 10

hexagonal prisms, crystal
glass: yes

Question 11

garnet

Answer 11

soccer ball crystals- net, transparent
glass: yes

Question 12

augite

Answer 12

opague black with greenish tint
glass: barely
g-greener than hornblende

Question 13

hornblende

Answer 13

opgague black
glass: barely

Question 14

limonite

Answer 14

color: dull earth luster
streak: rusty brown, yellow
glass: no
fingernail: no

Question 15

fluorite

Answer 15

color: any, purple, white clear cubes
big crystals, not too much form
glass: no
fingernail: no

Question 16

biotite

Answer 16

color: black
flexible sheets
glass: no
fingernail: no

Question 17

chlorite

Answer 17

color: dull green
streak: greenish to white

Question 18

plagioclase

Answer 18

color: white to grey
parallel striations in some
glass: barely

Question 19

orthoclase

Answer 19

color: pink to light brown, some white, may have veins
glass: barely

Question 20

dolomite

Answer 20

color: colorless or can be purplee blue green etc
forms in cubes
glass: no
fingernail: cannot, no

Question 21

calcite

Answer 21

color: colorless, white yellow, reacts to acid!

Question 22

muscovite

Answer 22

color: colorless, yellow, brown
thin flexible sheets
could be shiny

Question 23

halite

Answer 23

color: colorless, yellow brown, blue green
transparent
cubes, salty
glass: no
fingernail: no

Question 24

gypsum

Answer 24

colorless to white, bladed crystals

Question 25

clay

Answer 25

color: earthy white
fingernail: may be scratch

Question 26

talc

Answer 26

color: white grey green soapy color
fingernail: may be scratch

Question 27

sulfur

Answer 27

yellow, smells like rotten eggs