General Rock and Mineral Collection (Center: Angelite / Blue Anhydrite)
Anhydrite (Calcium Sulfate, CaSO4)
Category
Browse not a rock or mineral specimens identified by the Rock Identifier community.
General Rock and Mineral Collection (Center: Angelite / Blue Anhydrite)
Anhydrite (Calcium Sulfate, CaSO4)
Granodiorite
Granodiorite (containing Quartz, Plagioclase Feldspar, Biotite, and Hornblende)
Unknown Organic Object (likely a berry or fruit)
Not applicable; this is not a geological specimen. If it were a cranberry, its scientific name would be Vaccinium macrocarpon; if a cherry, it would be Prunus avium or Prunus cerasus.
N/A - Image does not contain a rock or mineral
Anthropogenic textile material
Unidentifiable Specimen
Undetermined
Metallic Ornament / Jewelry
N/A - This is an artificial object, not a geological specimen.
Man-made Synthetic Material (Not a rock or mineral)
Polyester (Polyethylene terephthalate) / Faux Fur
Unable to Identify (Image Obscured)
Man-made earbud charging case (Not a rock or mineral)
Acrylonitrile Butadiene Styrene (ABS) Plastic with electronic components
Biotite Schist (likely)
Biotite Schist (rock), Biotite (mineral)
Granite
Granite
Sandstone
Quartz Sandstone (predominantly)
Dendritic Jasper
Silicon Dioxide (SiO2) with Manganese/Iron oxide inclusions
Granite (Leucogranite)
Felsic Plutonic Rock (Granite)
Amethyst
Amethyst (Silicon Dioxide - SiO2)
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
Gold (Elemental Metal)
Gold (Au)
Grey River Stone (Gneiss/Schist mix)
Foliated Metamorphic Rock (variable mineral formula)
The user-provided image does not contain a rock or mineral specimen
Popcorn
Zea mays everta (P. Wilson) (Botanical name for the corn variety)
Amygdaloidal Basalt
Amygdaloidal Basalt (extrusive volcanic rock with mineral inclusions)
Jasper in Basalt Matrix
Silicon Dioxide (SiO2) with impurities; Chalcedony
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions of iron oxide)
Serpentinite
Serpentinite (a rock composed predominantly of serpentine group minerals)
Chipped Glass/Plastic Fragment
Silicon dioxide (SiO2) for glass (amorphous) or various polymer compounds for plastic
Blue Chalcedony
Microcrystalline Quartz (SiO2)
Note: Item is not a geological specimen
Homo sapiens (Dermal Appendage: Pilus)
Basalt
Mafic volcanic rock (Primary minerals: Plagioclase feldspar, Pyroxene)
N/A (Non-Geological Object)
Schist
Schist (metamorphic rock)
Sandstone
Sandstone (composed primarily of sand-sized minerals or rock grains)
Granite
Phaneritic Felsic Igneous Rock (Main minerals: SiO2, KAlSi3O8, NaAlSi3O8)
Note: Item is not a geological specimen
Guitar Components (Steel, Nickel, Plastic, Wood)
Carnelian
Carnelian (Microcrystalline Quartz, SiO2)
Note: This is a Man-Made Object (Costume/Prop Patch)
Synthetic fiber and pigments (Cellulose/Plastic-based composite)
Man-made Synthetic Material (Plastic/Composite)
Acrylonitrile Butadiene Styrene (ABS) or High-Impact Polystyrene (HIPS)
Shale or Siltstone
Sedimentary Clastic Rock (Variable mineral composition including quartz and clay minerals)
Anthropogenic Heat Source (Electronic/Industrial Interface)
Thermal IR emission (Electronic infrastructure)
Hypersthene
Hypersthene ((Mg,Fe)SiO₃)
Quartz Druzy (on Matrix)
Silicon Dioxide (SiO2)
Granite (Pink/Red)
Phaneritic Plutonic Felsic Rock (major minerals: Quartz, Orthoclase Feldspar, Plagioclase Feldspar)
Pebble (likely a type of sandstone or quartzite pebble)
Clastic Sediment (specifically, a rudite-sized clast). If the pebble is composed of a specific rock type, its scientific name would be that rock type (e.g., 'Quartzite pebble', 'Granite pebble', 'Chert pebble'). Given its appearance, it is likely a metamorphic quartzite pebble or a hard sandstone pebble.