Blue Apatite
Apatite - Ca5(PO4)3(F,Cl,OH)
Category
Browse this is not a rock or mineral specimens identified by the Rock Identifier community.
Blue Apatite
Apatite - Ca5(PO4)3(F,Cl,OH)
Quartz Geode
Silicon Dioxide (SiO2)
Sandstone (Quartzose Sandstone)
Arenite (SiO2 principal component)
Amygdaloidal Rhyolite
Amygdaloidal felsic extrusive rock
Schist
Mica Schist
Quartz Druze
Silicon Dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Mica Schist
Mica Schist (primarily Muscovite and Biotite composition)
Clear Quartz (Rock Crystal)
Quartz (Silicon Dioxide, SiO2)
Sandstone (with potential Arkose/Lithic characteristics)
Arenite (Sedimentary rock composed of sand-sized grains)
Gneiss
Gneissic Metamorphic Rock
Quartz (Druzy/Macro-crystalline)
Silicon Dioxide (SiO2)
Basalt with Calcite Veining
Aphanitic Mafic Igneous Rock (Basalt) with CaCO3
Granodiorite
Granodiorite (containing Quartz, Plagioclase, Orthoclase, Biotite/Hornblende)
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
Granite
Granite (Felsic Intrusive Igneous Rock)
Granite with Mafic Inclusions
Granite (Phaneritic igneous rock composed of Quartz, Feldspar, and Mica)
Quartz vein in metamorphic rock
Crystalline Silicon Dioxide (SiO2) in Host Rock
Geode (unopened)
SiO2 - Chert-shelled concretion (mostly Quartz)
Granite Pegmatite
Phaneritic Plutonic Igneous Rock
Sandstone (Quartzose)
Arenite (primarily SiO2)
Granite
Plutonic felsic igneous rock
Chalcedony (Grey/White Agate)
Silicon Dioxide (SiO₂)
Amethyst (Tumbled)
Purple Quartz (SiO2 with iron impurities and irradiation)
Sandstone
Arenite (SiO2 based with various mineral cements)
Jasper
Silicon dioxide (SiO2)
Shale
Fissile Mudstone (Shale)
Gneiss (with Quartz-Feldspar vein)
Gneiss (high-grade metamorphic rock) containing Quartz (SiO2) and Feldspar (KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8)
Quartz Geode
Silicon Dioxide (SiO2) in a Secondary Formation
Jasper
Jasper (Silicon Dioxide, SiO2)
Sandstone
Arenite (composed primarily of SiO2)
Yellow Jasper
Jasper (Silicon Dioxide, SiO2)
Schist
Mica Schist
Basalt with Quartz Veining
Amygdaloidal Basalt (predominately SiO2 and (Na,Ca)(Si,Al)4O8)
Sparkling Druzy Quartz on Matrix
Silicon Dioxide (SiO2) with iron oxide inclusions
Fluorite (Rainbow or Multi-colored Fluorite)
Fluorite (Calcium Fluoride - CaF2)
Herkimer Diamond
Quartz (Silicon Dioxide) - SiO2
Sandstone
Arenite (often composed of Quartz, SiO2)
Granite
Phaneritic Felsic Igneous Rock
Agate
Silicon Dioxide (SiO2) - variety of Chalcedony
Gneiss
Gneiss (High-grade metamorphic rock)
Sandstone
Arenite (predominantly Quartz Sandstone)