Sodalite
Sodalite (Na8Al6Si6O24Cl2)
Category
Browse sedimentary and igneous (mixed) specimens identified by the Rock Identifier community.
Sodalite
Sodalite (Na8Al6Si6O24Cl2)
Olivine (Peridot when gem-quality)
Magnesium Iron Silicate (Mg,Fe)2SiO4
Amethyst
Crystalline Silicon Dioxide with Iron impurities (SiO2)
Rose Quartz
Rose Quartz (SiO2)
Garnet
Garnet Group (often Pyrope or Almandine); X3Y2(SiO4)3
Labradorite
(Ca, Na)(Al, Si)4O8
Labradorite
Feldspar (Plagioclase Series), (Ca,Na)(Al,Si)4O8
Amazonite
KAlSi3O8 (Potassium Aluminum Silicate)
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
Blue Lace Agate
Chalcedony (Silicon Dioxide, SiO2)
Granite
Granite (composed primarily of Quartz, Feldspar, and Mica)
Granite Cobble
Granite (Phaneritic Quartz-Feldspar Felsic Rock)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Carnelian (Chalcedony)
Silicon Dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Bloodstone
Heliotrope (a variety of Cryptocrystalline Quartz / Jasper, SiO2)
Carnelian Agate
Silicon Dioxide (SiO2) with high Iron Oxide impurities
Quartz with Muscovite Mica
SiO2 with KAl2(AlSi3O10)(OH)2
Andesite River Stones
Andesite
Rose Quartz
Silicon Dioxide (SiO2) with trace Titanium, Manganese, or Iron
Black Spinel
Magnesium Aluminum Oxide (MgAl2O4)
Pegmatite (Granite Pegmatite)
Intrusive Igneous Rock (Granite Pegmatite)
Nuummite
Nuummite (intergrowth of orthoamphiboles Anthophyllite and Gedrite, (Mg,Fe)7Si8O22(OH)2)
Quartz (Milky Quartz/Citrine Type)
Silicon Dioxide (SiO2)
Milky Quartz with Mineral Inclusions
Silicon Dioxide (SiO2) with miscellaneous inclusions
Milky Quartz
Silicon Dioxide (SiO2)
Vesicular Basalt (Pumice-like)
Vesicular Basalt
Basalt with Quartz Vein
Mafic Igneous Rock (SiO2 filling)
Basalt
Mafic volcanic rock (Primarily Plagioclase Feldspar and Pyroxene)
Basalt
Basalt
Basalt
Extrusive mafic igneous rock
Basalt Pebble
Basalt
Basalt
Extrusive mafic igneous rock
Basalt with Hematite staining
Extrusive mafic igneous rock with Fe2O3
Basalt
Extrusive mafic igneous rock
Basalt
Basalt
Basalt
Basalt (Mafic volcanic rock)
Basalt (River Stone)
Mafic volcanic rock
Basalt
Basalt
Vesicular Basalt (or Scoria)
Basalt (Aphanitic-Vesicular Mafic Igneous Rock)
Andesite
Andesite (Intermediate Extrusive Igneous Rock)
Andesite
Andesite (intermediate volcanic rock)