Amazonite
K(AlSi3O8) - Potassium Feldspar (Microcline variant)
mineral
Category
Mineral (Variant Of Quartz)
Browse mineral (variant of quartz) specimens identified by the Rock Identifier community.
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Chert (Jasper/Agate variant)
Microcrystalline Quartz (SiO2) with iron oxide inclusions
sedimentary
Orthoclase Feldspar
Potassium Aluminum Silicate (KAlSi3O8)
mineral
Amber (Burmite)
Fossilized tree resin (Succinite variant)
Organic mineraloid
Mixed Tumbled Gemstones and River Rocks
Mixed Decorative Stones (predominantly Silicon Dioxide - SiO2 variants)
Mixed (Igneous, Sedimentary, Metamorphic, and Minerals)
Chalcedony (Agate/Carnelian variant)
Silicon Dioxide (SiO2)
mineral
Chert (specifically Jasper or Flint variant)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Lake Superior Agate variant)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (specifically Flint or Jasper variant)
Microcrystalline quartz (SiO2)
sedimentary
Chert (specifically Flint or Jasper variant)
Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (specifically Flint or Jasper variant)
Microcrystalline Quartz (SiO2)
sedimentary
Sandstone (Ferruginous)
Arenite with Iron Oxide cement
sedimentary
Fossilized Tiger Shark Tooth
Galeocerdo cuvier (fossilized hydroxylapatite)
sedimentary
Sandstone (Red Arkose)
Sandstone (Arkose variant, primarily SiO2 with KAlSi3O8)
sedimentary
Chert (Quartz Pebble)
Silicon Dioxide (SiO2)
sedimentary
Chert (Yellow or Ochre Jasper variant)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (specifically Flint or Jasper variant)
Microcrystalline quartz (SiO2)
sedimentary
Chert (specifically Flint or Jasper variant)
Microcrystalline quartz (SiO2)
sedimentary
Chert (specifically Flint or Jasper variant)
Microcrystalline quartz (SiO2)
sedimentary
Chert (specifically Flint or Jasper variant)
Microcrystalline quartz (SiO2)
sedimentary
Chert (Light Grey / Flint variant)
Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (specifically Flint or Jasper variant)
Microcrystalline Quartz (SiO2)
sedimentary
Psilomelane (Manganese Ore)
Psilomelane (Ba,H2O)2Mn5O10
mineral
Granite Cobble/Pebble
Granite
Igneous
Botryoidal Chalcedony (Desert Rose / Grape Agate variant)
Silicon Dioxide (SiO2)
mineral
Banded Iron Formation (Red Jasper and Hematite Chert)
Banded Iron Formation (BIF); Fe2O3 (Hematite) + SiO2 (Quartz/Jasper)
sedimentary
Granite
Granite (Mainly Quartz, Alkali Feldspar, and Plagioclase)
igneous
Limestone (Travertine/Tufa variant)
Calcium Carbonate (CaCO3)
sedimentary
Sandstone (with Chert/Quartzite)
Arenite (primarily SiO2)
sedimentary
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Chert (Nodule)
Chert (composed of Microcrystalline Silica/SiO2)
sedimentary
Sandstone (lithic)
Lithic Wacke / Arenite
sedimentary
Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Chert
Chert (Microcrystalline Quartz, SiO2)
sedimentary
Fluorite
Calcium fluoride (CaF2)
mineral
Satin Spar (Selenite variant)
Gypsum (Calcium Sulfate Dihydrate, CaSO4·2H2O)
mineral
Slag Glass (Leland Blue variant)
Anthropogenic Vitreous Silicate
mineral
Desert Rose (Baryte or Gypsum Rose)
Baryte (BaSO4) or Gypsum (CaSO4·2H2O)
mineral
Chert (and its variety Flint)
Silicon Dioxide (SiO2) - Microcrystalline or cryptocrystalline Quartz
sedimentary
Chert (Field-collected Arrowhead-shaped Fragment)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Ferruginous Sandstone
Sandstone (enriched with Iron Oxide)
sedimentary
Chert (specifically Flint or Novaculite variant)
Chert (Microcrystalline Quartz, SiO2)
sedimentary