Greenstone / Greenschist
Greenschist (composed of chlorite, epidote, and actinolite)
metamorphic
Category
Mixed: Igneous And Sedimentary
Browse mixed: igneous and sedimentary specimens identified by the Rock Identifier community.
Bull Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Potassium Feldspar (Orthoclase)
Orthoclase (KAlSi3O8)
mineral
Amazonite
K(AlSi3O8) - Potassium Aluminum Silicate (Microcline)
mineral
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Biotite (Mica)
Biotite (K(Mg,Fe)3AlSi3O10(OH,F)2)
mineral
Amethyst (Quartz)
Silicon Dioxide (SiO2) with iron impurities
mineral
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
mineral
Sodalite
Sodalite (Na8Al6Si6O24Cl2)
mineral
Olivine (Peridot when gem-quality)
Magnesium Iron Silicate (Mg,Fe)2SiO4
mineral
Amethyst
Crystalline Silicon Dioxide with Iron impurities (SiO2)
mineral
Rose Quartz
Rose Quartz (SiO2)
mineral
Amazonite
K(AlSi3O8)
mineral
Garnet
Garnet Group (often Pyrope or Almandine); X3Y2(SiO4)3
mineral
Labradorite
(Ca, Na)(Al, Si)4O8
mineral
Labradorite
Feldspar (Plagioclase Series), (Ca,Na)(Al,Si)4O8
mineral
Amazonite
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Granite Cobble
Granite (Phaneritic Quartz-Feldspar Felsic Rock)
igneous
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Epidote in Quartz (Epidosite)
Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Sodalite
Na8(Al6Si6O24)Cl2
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Blue Lace Agate
Chalcedony (Silicon Dioxide, SiO2)
mineral
Chrysocolla in Matrix
Hydrated copper phyllosilicate (Cu,Al)2H2Si2O5(OH)4' nH2O on Quartz/Feldspar matrix
mineral
Granite
Granite
Igneous
Granite
Granite (Phaneritic Quartz-Feldspar Plutonic Rock)
igneous
Porphyritic Andesite
Andesite
Igneous
Andesite
Andesite
igneous
Porphyritic Andesite
Andesite
igneous
Rose Quartz
Silicon Dioxide (SiO2)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Pyrite in Quartz
Silicon Dioxide (SiO2) with Iron Sulfide (FeS2)
mineral
Amethyst
SiO2 (Silicon Dioxide with iron impurities)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Jasper Agate
Silicon dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Labradorite
Labradorite (Ca,Na)(Al,Si)4O8
mineral
Carnelian
Carnelian (Silicate mineral, SiO2)
mineral
Carnelian (Chalcedony)
Silicon Dioxide (SiO2)
mineral