MINERALS

Question 1

Hardness: 5.5
streak: black
color: black
luster: metallic
cleavage: NO
other - its magnetic

Answer 1

Magnetite (giveaway it’s magnetic)

Question 2

hardness: 6
streak white:
color: teal/pink/tan
luster: not metallic
cleavage - 2 9O angles

Answer 2

Potassium feldspar (giveaways color and angles)

Question 3

hardness: about 5-6
streak: red/brown
color: black
metallic: no
cleavage: no
other: glittery

Answer 3

hematite (giveaway is that its streak and the glittery)

Question 4

hardness: 3-5
color: white off white/clear/ yellow
streak: white
metallic: no
cleavage: 3 90* angle
other: reacts to the acid

Answer 4

calcite (giveaway 3 pairs reacts to the acid)

Question 5

hardness: about 5.5
color: yellow/green/brown (darker than Kspar)
streak: white
metallic: definitely not
cleavage: no (deceiving in some pieces)
other: the granular mass? looks made of grains

Answer 5

olivine (color & granular)

Question 6

hardness: less than 2
color: clear hints of white and brown
streak: would be brown likely
metallic: no (just clear)
cleavage: there is cleavage (just top and bottom)
other - flakiness

Answer 6

muscovite (flakiness & color)

Question 7

hardness: about 5.5
streak: white
color: grey/white/black blue
metallic: no
cleavage: 2?
other: striations and iridescence

Answer 7

Calcium flagioclase feldspar (look at the stirations)

Question 8

hardness: more than 5.5
color: white to clear white
streak: white
metallic: no
cleavage: no fractures
other: six sided crystal

Answer 8

quartz (six sided ness)

Question 9

hardness: 2
color: white clear white
metallic: no
streak: white
cleavage: 1 pair (top and bottom)
also - flaky

Answer 9

gypsum (flakes and hardness)

Question 10

hardness: about 5.5
color: black
luster: NM
streak: white
cleavage: 60* and 120* angles

Answer 10

amphibole (angles)

Question 11

hardness: less than 2
color: grey
streak: grey
cleavage 3 pairs (at 90)
also: cube like heavy

Answer 11

galena (cubeness and angles)

Question 12

hardness: 2-3
color: clear translucent
streak: white
luster: NM
cleavage: 3 at 90*
also: salty

Answer 12

halite (salt & clear cubes)

Question 13

hardness: less than 2
color: sandy yellow/green
streak: white
luster:NM
cleavage 1 pair
other: smooth & soapy

Answer 13

talc (smoothness cleavage)

Question 14

hardness: around 5.5
streak: white
color: brown,redish, black
luster: NM
cleavage: fractures
other: 12 sided crystal

Answer 14

garnet ( color and 12 sided)

Question 15

hardness: less than 2
color:blackish clear
streak: brown grey
luster: NM
cleavage: 1
other: flaky

Answer 15

biotite (flaky and dark)

Question 16

hardness: around 5.5
color: whiteish/grey
streak white
luster:NM
cleavage: 2 pairs
other the striations again

Answer 16

Sodium plagioclase feldspar

Question 17

hardness: 3-5 range
color: purple, white green black, kind of clear
streak: white
luster: NM
cleavage: 4!

Answer 17

fluorite (color and cleavage)

Question 18

hardness: above 5.5
color: white/pink
streak: white
luster: NM
cleavage: no
other: crystal like

Answer 18

quartz (crystals, and pink)

Question 19

hardness: around 5.5
color: black
streak: white
luster: NM
cleavage: 2 pairs (at 90*)
blocky

Answer 19

Pyroxene cleavage and luster (to compare to galena)