Sandstone
Quartz Arenite (a common type of sandstone, given the appearance), Arkose, Greywacke (depending on mineralogy)
Category
Browse sedimentary or igneous associated mineral specimens identified by the Rock Identifier community.
Sandstone
Quartz Arenite (a common type of sandstone, given the appearance), Arkose, Greywacke (depending on mineralogy)
Gold Ore
Native Gold (Au)
Druzy Agate (Star-cut Geode Slice)
Silicon Dioxide (SiO2) - Microcrystalline and Macrocrystalline Quartz
Rhodonite
Rhodonite (Manganese Silicate), (Mn,Fe,Mg,Ca)SiO3
Amazonite
Triklinic Potassium Feldspar (KAlSi3O8)
Rhodonite
Manganese Silicate (Mn, Fe, Mg, Ca)SiO3
Orange Calcite
Calcium Carbonate (CaCO3)
Clear Quartz Crystal
Silicon Dioxide (SiO2)
Yellow Quartz (Citrine or Yellow Chalcedony)
Silicon Dioxide (SiO2)
Quartz (Milky or Clear Quartz fragment)
Silicon Dioxide (SiO2)
Carnelian (Orange Chalcedony)
Silicon Dioxide (SiO2)
River Stone (Granitic Gneiss)
Foliated Granitic Gneiss
Gneiss (specifically Banded Gneiss)
Gneiss
Gneiss (Granitic Gneiss)
Gneiss (from German Gneis, related to 'spark')
Mica Schist
Mica Schist (predominantly Muscovite or Biotite sheet silicates)
Hematite (Iron Ore)
Hematite (Fe2O3)
Quartz (specifically Milky Quartz/Quartzite)
Silicon Dioxide (SiO2)
Amazonite
K(AlSi3O8), Microcline (potassium feldspar)
Charoite
(K,Sr,Ba,Ca)15-16(Na,Ca)8(Si,Al)24O60(OH,F)4 · nH2O (Hydrated silicate of potassium, calcium, and sodium)
Carnelian
Carnelian (a variety of Chalcedony); SiO2 (Silicon Dioxide)
Chalcedony (Agate/Chert)
Silicon Dioxide (SiO₂)
Carnelian
Carnelian (Microcrystalline Quartz, SiO2)
Yellow Quartz (Citrine Quartz or Yellow Chalcedony)
Silicon Dioxide (SiO2)
Gneiss
Gneiss
Milky Quartz
Milky Quartz (Silicon Dioxide, SiO2)
River Rocks (Basalt and Sedimentary Stones)
Mafic Igneous Rock (Basalt) and Clastic Sedimentary Rock
Rose Quartz
Quartz (SiO₂), variety Rose Quartz
Sulfur on Aragonite
Sulfur (S) and Aragonite (CaCO3)
Quartz
Silicon Dioxide (SiO2)
Gneiss
Gneiss
Fancy Jasper
Chalcedony (cryptocrystalline quartz) with inclusions
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
Fuchsite Quartzite
Fuchsite-bearing Quartzite
Nuummite
Nuummite (Orthoamphibole rock / Anthophyllite-Gedrite blend)
Gneiss (Banded Gneiss)
Gneiss
Gneiss (specifically a Granitic Gneiss)
Gneiss (typically composed of Quartz, Feldspar, and Mica/Amphiboles)
Dalmatian Jasper (or Dalmatian Stone)
Dalmatian Stone (A peralkaline felsite composed of feldspar, quartz, and sodic amphibole)
Flint
Chert (a form of cryptocrystalline quartz, chemical formula SiO₂)
Chalcedony
Chalcedony (SiO₂)
Quartz (Milky/Gravel variety)
Silicon Dioxide (SiO2)
Yellow Jasper
Silicon Dioxide (SiO2)
Banded Gneiss
Gneiss (typically quartz, feldspar, mica, amphibole composition)