Garnet Schist
Almandine-mica schist
Category
Browse mineral side rock specimens identified by the Rock Identifier community.
Garnet Schist
Almandine-mica schist
Wonderstone
Banded Rhyolite (SiO2 with impurities)
Glaucophane Schist (Blueschist)
Glaucophane Schist
Schist
Mica Schist (primarily Muscovite [KAl2(AlSi3O10)(OH)2] or Biotite)
Gneiss Pebble
Gneiss
Vesicular Basalt (River Pebble)
Vesicular Basalt
Granite
Granite
Iron-stained Quartzite
Metamorphosed Quartz (SiO2) with Hematite/Limonite impurities
Gneiss
Gneiss (High-grade regional metamorphic rock)
Sandstone (Red Sandstone / River Stone)
Arenite (composed primarily of Quartz, SiO2, with Iron Oxide cementation)
Milky Quartz with inclusions
Silicon Dioxide (SiO2)
Quartz (Vein Quartz)
Silicon Dioxide (SiO2)
Green Aventurine
Silicon Dioxide (SiO2) with Chromium-bearing Fuchsite
Granite Water-Worn Pebble
Intermediate to Felsic Phaneritic Igneous Rock
Dalmatian Jasper
Dalmatian Stone (not a true Jasper, primarily a Perthitic Feldspar with Arfvedsonite)
Turquoise
Turquoise - CuAl6(PO4)4(OH)8·4H2O
Gneiss (Metamorphic Rock)
Gneiss
Granite
Granite (a plutonic igneous rock)
Chalcedony (River or Beach Pebbles)
Chalcedony (Silicon Dioxide, SiO2)
Carnelian (Chalcedony)
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Milky Quartz Pebble
Silicon Dioxide (SiO2)
Yooperlite (Fluorescent Sodalite-bearing Syenite)
Sodalite-rich Syenite (Syenite with Na8(Al6Si6O24)Cl2 inclusions)
Green Quartzite
Quartzite (primarily SiO2 with chlorite inclusions)
Basalt with Quartz Vein
Basalt (fine-grained mafic igneous rock) with crystalline Quartz (SiO2)
Prehnite
Prehnite, Ca2Al(AlSi3O10)(OH)2
Banded Agate (Onyx type)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
Basalt with Olivine Phenocrysts
Aphanitic Mafic Volcanic Rock (Basalt)
Banded Gneiss
Gneiss
Amethyst
Quartz (Silicon Dioxide with iron impurities), SiO2
Gneiss with Quartz/Feldspar Vein
Quartz-Feldspathic Gneiss
Fuchsite in Quartz
Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2) in Quartz (SiO2)
Geode (Unopened)
Chalcedony Geode (Hydrated Silicon Dioxide, SiO2)
Rose Quartz
Silicon dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Dyed Agate Geode (Pink/Magenta)
Silicon Dioxide (SiO2) - variety of Chalcedony/Quartz
Milky Quartz with Chlorite/Mica inclusions
Silicon Dioxide (SiO2) with inclusions
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
Tree Agate
Dendritic Agate (Silicon Dioxide, SiO2)
Blue Quartz
Silicon Dioxide (SiO2) with inclusions
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Carnelian Agate (with Quartz/Chalcedony)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Flower Agate
Silicon Dioxide (SiO2) with Plume Inclusions