Nonsilicate mineral with 4 planes of cleavage; Hardness=4
CaF2
Silicate mineral that is harder than glass and can appear olive green
(Fe,Mg)2SiO4
Silicate mineral that can appear deep red and has conchoidal fracture
Advanced silicate formula
Nonsilicate mineral with hardness of 2
CaSO4*2H2O
Nonsilicate mineral with yellow streak that smells like sulfur
ZnS
Description
Mineral Name
Formula
Silicate mineral that can appear black with 2 planes of cleavage not at 90 degrees
Advanced silicate formula
Silicate mineral that can have 1 plane of cleavage and appear dark
Advanced silicate formula
Nonsilicate mineral that has a greenish-black streak, looks like gold, and can be cubic
FeS2
Nonsilicate mineral that can have 3 planes of cleavage at 90 degrees and taste like salt
NaCl
Silicate mineral that can have 1 plane of cleavage and appear clear
Advanced silicate formula
Silicate mineral that has a hardness of 7 and can have a crystal form with 6 sides
SiO2
Nonsilicate mineral that is very dense; State mineral of Missouri
PbS
Nonsilicate mineral that is used in pencil lead, can feel greasy, and leaves a gray streak
C
Silicate mineral that has 2 planes of cleavage at 90 degrees and exhibits exsolution lamellae; Hardness=6
KAlSi3O8
Silicate mineral with 2 planes of cleavage and exhibits striations
(Na,Ca)Al(1-2)Si(2-3)O8
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