Dark Colored Minerals with Non-Metallic Lusters,
and Harder than Glass
PHYSICAL PROPERTIES
 MINERAL NAME, FORMULA
 
NO
Cleavage
[MORE PROPERTIES]
 GARNET, (Fe,Mg,Ca)3Al2Si3O12
QUARTZ, SiO2
OLIVINE, (Mg,Fe)2SiO4
Cleavage
[MORE PROPERTIES]
 HORNBLENDE, NaCa2(Mg,Fe,Al)5(Al,Si)8O22(OH)2
AUGITE, Ca(Mg,Fe)Si2O6
PLAGIOCLASE FELDSPAR, (Ca,Na)(Al,Si)4O8, Ca>Na
EPIDOTE, Ca2FeAl2Si3O12(OH)
GARNET, (Fe,Mg,Ca)3Al2Si3O12
 

Does the mineral show cleavage?  [Yes]---[No ]

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