Term
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Definition
Ca5(PO4)3(F,Cl,OH)
Color: green
Hardness: 5
Streak: white
Cleavage: 1 (poor)
Luster: vitreous (like glass)
Other Properties: effervescences with hydrochloric (HCl) acid |
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Term
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Definition
CaCO3
Color: various
Hardness: 3
Streak: white to gray
Cleavage: rhombohedral
Luster: non-metallic
Other Properties: effervescences with hydrochloric (HCL) acid |
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Term
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Definition
Al2O3
Color: various
Hardness: 9
Streak: white
Cleavage: none
Luster: non-metallic
Other Properties: insoluble |
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Term
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Definition
Al2O3
Color: various
Hardness: 9
Streak: white
Cleavage: none
Luster: non-metallic
Other Properties: insoluble |
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Term
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Definition
PbS
Color: silver-gray
Hardness: 2.5
Streak: gray
Cleavage: cubic
Luster: metallic
Other Properties: high specific gravity (7.6) and brittle |
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Term
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Definition
C
Color: gray to black
Hardness: 1
Streak: gray to black
Cleavage: basal
Luster: metallic
Other Properties: feels greasy |
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Term
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Definition
CaSO4.2H2O
Color: Usually colorless, white or gray
Hardness: 2
Streak: white
Cleavage: 1 (2 poor)
Luster: vitreous
Other Properties: soluble in acids |
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Term
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Definition
NaCl
Color: various, sometimes looks like ice
Hardness: 2.5
Streak: white
Cleavage: cubic
Luster: non-metallic
Other Properties: soluble in water, taste salty |
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Term
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Definition
Fe2O3
Color: gray-silver
Hardness: 5-6.5
Streak: dark red
Cleavage: none
Luster: metallic
Other Properties: high specific gravity (5.3) |
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Term
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Definition
amorphous hydrated iron oxide
Color: brown to yellow
Hardness: 5-5.5
Streak: brown to yellow (mix)
Cleavage: none
Luster: metallic to dull
Other Properties: occurs commonly in irregular shapes |
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Term
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Definition
Fe3O4
Color: black to gray plain rock look
Hardness: 6
Streak: black
Cleavage: none
Luster: non-metallic
Other Properties: magnetic and high specific gravity (5.2) |
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Term
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Definition
FeS2
"Fool's Gold"
Color: brassy yellow
Hardness: 6-6.5
Streak: green to black
Cleavage: none
Luster: metallic
Other Properties: high specific gravity (5.0), commonly cubic and brittle |
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Term
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Definition
ZnS
Color: yellow, brown or black
Hardness: 3.5-4
Streak: pale yellow-brown
Cleavage: dodecahedral
Luster: metallic
Other Properties: smells like sulfur when broken |
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Term
| Silicate: Amphibole (Hornblende) |
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Definition
Ca2(Mg,Fe)4Al(Si7Al)O22(OH,F)2
Color: green to black or charcoal look
Hardness: 5.5
Streak: pale green
Cleavage: 2 (60¡ and 120¡)
Luster: non-metallic
Other Properties: insoluble |
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Term
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Definition
K(Mg,Fe)3(Al,Fe)Si3O10(OH,F)2
Color: brown to black
Hardness: 2.5-3
Streak: gray brown
Cleavage: basal (parallel to the base)
Luster: non-metallic
Other Properties: soluble in sulfuric acid |
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Term
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Definition
(Mg,Fe,Ca)3Al2(SiO4)3
Color: typically dark red to brown (looks like marble top)
Hardness: 6.5- 7.5
Streak: white
Cleavage: none
Luster: vitreous
Other Properties: can be of gem quality |
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Term
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Definition
KAl2(Si3Al)O10(OH,F)2
Color: clear
Hardness: 2-2.5
Streak: white
Cleavage: basal (parallel to the base)
Luster: non-metallic
Other Properties: soluble in acids |
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Term
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Definition
| http://web.eps.utk.edu/courses/rock_kit.html |
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Term
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Definition
| http://web.eps.utk.edu/courses/rock_kit.html |
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Term
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Definition
| http://web.eps.utk.edu/courses/rock_kit.html |
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Term
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Definition
| http://web.eps.utk.edu/courses/rock_kit.html |
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Term
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Definition
| http://web.eps.utk.edu/courses/rock_kit.html |
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Term
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Definition
| http://web.eps.utk.edu/courses/rock_kit.html |
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Term
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Definition
| http://web.eps.utk.edu/courses/rock_kit.html |
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