Sunstone (Feldspar)
(Ca,Na)((Al,Si)2Si2O8) with inclusions of Hematite or Goethite
mineral
Category
Mineral Composite
Browse mineral composite specimens identified by the Rock Identifier community.
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Calcite on Limestone
Calcium Carbonate (CaCO3) on Sedimentary Rock
mineral
Emerald in Matrix
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
gemstone
Druzy Quartz on Matrix
Silicon Dioxide (SiO2)
mineral
Amazonite
Microcline (K(AlSi3O8))
mineral
Quartz (Citrine/Milky variety)
Silicon Dioxide (SiO2)
mineral
Peach Moonstone
Potassium Aluminum Silicate (KAlSi3O8) with inclusions
mineral
Citrine Quartz
Silicon Dioxide (SiO2) with ferric iron impurities
mineral
Emerald in Matrix
Emerald (Beryllium Aluminum Silicate - Be3Al2(SiO3)6)
mineral
Lake Superior Agate
Silicon Dioxide (Cryptocrystalline Quartz), SiO2
mineral
Banded Agate with Drusy Quartz
Cryptocrystalline Quartz (SiO2) with macrocrystalline Quartz
mineral
Citrine Quartz
Silicon Dioxide (SiO2) with iron impurities
mineral
Amazonite
Microcline (KAlSi3O8) with Pb impurities
mineral
Quartz (Citrine variety)
Silicon Dioxide (SiO2)
mineral
Citrine
Silicon dioxide (SiO2)
mineral
Sunstone
Plagioclase Feldspar (Na,Ca)(Al,Si)4O8
mineral
Fire Opal (in Matrix)
Hydrated Silica (SiO2·nH2O)
mineral
Chert (Flint Pebbles)
Microcrystalline Quartz (SiO2)
sedimentary
Quartz (Iron-Stained)
Crystalline Silicon Dioxide (SiO2)
mineral
Sunstone
Oligoclase (Plagioclase Feldspar), (Ca,Na)(Al,Si)4O8
mineral
Amethyst
Quartz (Silicon Dioxide with Iron impurities), SiO2
mineral
Amazonite
KAlSi3O8 (Potassium aluminum silicate - blue-green variety of Microcline)
mineral
Jasper
Silicon dioxide (Microcrystalline Quartz, SiO2)
sedimentary
Amazonite
Potassium Aluminum Silicate (KAlSi3O8)
mineral
Chalcedony (Agate Pebble)
Silicon Dioxide (SiO2)
mineral
Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
mineral
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
metamorphic
Prehnite
Prehnite, Ca2Al2Si3O10(OH)2
mineral
Smoky Quartz with Feldspar
SiO2 (Quartz) with KAlSi3O8 (Potassium Feldspar)
mineral
Tiger's Eye
Fibrous Quartz (SiO2) with iron inclusions
mineral
Brecciated Jasper
Silicon dioxide (SiO2) microcrystalline quartz breccia
sedimentary
Quartz with Mica (Granitic / Pegmatitic Quartz)
Silicon Dioxide (SiO2) with Mica group minerals
mineral
Sandstone
Sedimentary Rock (Quartz arenite)
sedimentary
Sandstone
Arenite
sedimentary
Citrine and Quartz
Silicon Dioxide (SiO2)
mineral
Chrysocolla in Matrix
Hydrated copper silicate - (Cu,Al)2H2Si2O5(OH)4·nH2O
mineral
Sandstone (Quartzose Pebble)
Clastic Sedimentary Rock (Litharenite/Quartz arenite)
sedimentary
Malachite
Copper Carbonate Hydroxide, Cu2CO3(OH)2
mineral
Red Sandstone
Clastic Terrigenous Sedimentary Rock (composed mostly of SiO2 with Fe2O3)
sedimentary
Snowflake Obsidian and Green Aventurine
Volcanic Glass (SiO2 with Cristobalite inclusions) and Quartz (SiO2 with Fuchsite)
igneous and metamorphic
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
metamorphic
Pyrite and Fluorite on Quartz (Matrix Specimen)
Iron Disulfide (FeS2) and Calcium Fluoride (CaF2) with Silicon Dioxide (SiO2)
mineral