General Rock and Mineral Collection (Center: Angelite / Blue Anhydrite)
Anhydrite (Calcium Sulfate, CaSO4)
Category
Browse sedimentary (jasper), mineral (aquamarine) specimens identified by the Rock Identifier community.
General Rock and Mineral Collection (Center: Angelite / Blue Anhydrite)
Anhydrite (Calcium Sulfate, CaSO4)
Chert (often called Flint or Jasper depending on color)
Chert (SiO2 - Microcrystalline or Cryptocrystalline Quartz)
Bumble Bee Jasper
Volcanic Tuff (mixture of SiO2, CaCo3, S, and As2S3)
Sandstone (with man-made markings)
Arenite (composed primarily of Quartz, SiO2)
Pyrite
Iron Sulfide (FeS2)
Carnelian Agate
Chalcedony (Silicon Dioxide, SiO2)
Red Jasper
Silicon Dioxide with Iron Oxide inclusions (SiO2 + Fe2O3)
Quartz (likely milky quartz or a stained variety)
Silicon Dioxide (SiO₂)
Brown Sandstone
Arenite (primarily Quartz and Feldspar, with Iron Oxide cement)
Chert (varietal: Jasper or Flint likely, but definitive identification is difficult from image)
SiO₂ (silicon dioxide)
Chert (Pink Jasper/Agate variety)
Microcrystalline Quartz (SiO2)
Chert (Common Opal/Jasper variety)
Cryptocrystalline Quartz (SiO2)
Chert (varieties include Flint and Jasper)
Microcrystalline or Cryptocrystalline Silicon Dioxide (SiO2)
Chert (variations include Flint/Jasper)
Chert (SiO2)
Chert (specifically Red Chert / Jasper)
Silicon Dioxide (SiO2)
Chert (often called Flint or Jasper)
Silicon Dioxide (SiO2)
Chert (variations include Flint or Jasper)
Chert (Silicon Dioxide, SiO2)
Chert (varieties include Flint and Jasper)
Silicon Dioxide (SiO2) / Microcrystalline Quartz
Sandstone
Arenite
Orange Calcite
Calcite (Calcium Carbonate, CaCO3)
Chert
Siliceous sedimentary rock (predominantly microcrystalline quartz, SiO2)
Sandstone (Quartz-rich)
Arenite (SiO2)
Chert (Common Opal/Jasper variety)
Microcrystalline Quartz (SiO2)
Chert (Commonly known as Flint or Jasper when pigmented)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Shale or Slaty Mudstone
Argillaceous sedimentary rock
Chert (specifically River Stone / Jasper variety)
Microcrystalline Quartz (SiO2)
Shale
Shale (Consolidated fine-grained clay/silt)
Satin Spar (Gypsum)
Hydrous Calcium Sulfate (CaSO4·2H2O)
Thunderegg (Agetized Geode nodule)
Rhyolitic Agate Nodule (SiO2 filling volcanic cavities)
Sandstone (likely Arkosic or Lithic)
Clastic Sedimentary Rock (SiO2 with accessory minerals)
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Bloodstone (Heliotrope)
Chalcedony (SiO2) with inclusions of Iron Oxide or Red Jasper
Limonite with Trace Fossils
Hydrous Iron Oxide Mixture (FeO(OH)·nH2O)
Chert (specifically Flint or Jasper-Chert)
Silicon Dioxide (SiO2)
Yellow Chert (Gold-toned Jasper)
Silicon Dioxide (SiO2)
Chert (often called Flint or Jasper)
Microcrystalline or Cryptocrystalline Silicon Dioxide (SiO2)
Chert (often called Flint or Jasper)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (variations include Flint/Jasper)
Chert (SiO2)
Chert (variations include Flint or Jasper)
Chert (SiO2)
Chert (specifically Green Chert/Jasper)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
Pink Chert (Brecciated Jasmine/Jasper)
Silicon Dioxide (SiO2)