Amber
Succinite (Resinite)
mineraloid
Category
Mineral (Specifically A Mineraloid)
Browse mineral (specifically a mineraloid) specimens identified by the Rock Identifier community.
Learn about Mineral (Specifically A Mineraloid) in the encyclopedia
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Obsidian
Volcanic Glass (SiO2)
igneous
Obsidian with Mahogany Phasing
Volcanic Glass (SiO2 + Fe2O3)
igneous
Banded Agate (specifically Carnelian Agate)
Silicon dioxide (SiO2) - Chalcedony variety
mineral
Fossil Shark Tooth (Sand Tiger Shark type)
Carcharias sp. (likely Odontaspis)
fossil
Granite (specifically Brown Granite Countertop)
Phaneritic Felsic Igneous Rock (Granite-Gabbro series)
igneous
Quartzite (Milky Quartz Cobble)
Silicon Dioxide (SiO2)
Metamorphic
Green Calcite
Calcium Carbonate (CaCO3)
mineral
Banded Agate (Onyx type)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
mineral
Schist (specifically Mica Schist)
Mica Schist (primarily composed of Muscovite KAl2(AlSi3O10)(OH)2 and Biotite)
metamorphic
Gneiss (specifically Biotite Gneiss)
Gneiss (high-grade metamorphic rock primarily composed of Silicates)
metamorphic
Synthetic Resin (Artificial Specimen)
Polyurethane or Polyester Resin
mineraloid (man-made)
Chert (specifically Tan Chert)
Chert (SiO2)
sedimentary
Sandstone (specifically Red Sandstone)
Arenite (SiO2 with Iron Oxide)
sedimentary
Obsidian
Obsidian (Volcanic Glass), primarily SiO2
igneous
Quartz (specifically Milky Quartz Pebble)
Silicon Dioxide (SiO2)
mineral
Banded Calcite or Travertine
Calcium Carbonate (CaCO3)
Sedimentary
Schist (specifically Mica Schist)
Mica Schist
metamorphic
Quartz (specifically Clear Quartz with iron/hematite staining)
Silicon Dioxide (SiO2)
mineral
Banded Agate (specifically Carnelian Agate)
Silicon Dioxide (SiO2)
mineral
Banded Agate (specifically Botswana Agate appearance)
Silicon Dioxide (SiO2)
mineral
Banded Agate (specifically Carnelian Agate slice)
Chalcedony (cryptocrystalline variety of Quartz), SiO2
mineral
Agate (specifically, a slice of a Blue Lace or Chalcedony Agate nodule)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
mineral
Fluorite (specifically Rainbow Fluorite or Purple Fluorite)
Calcium Fluoride (CaF2)
mineral
Quartz (specifically Citrine or Yellow Quartzite pebble)
Silicon Dioxide (SiO2)
mineral
Quartz Crystal (specifically a milky or semi-translucent single crystal point)
Silicon Dioxide (SiO2)
mineral
Chalcedony (specifically Common Opal or Agate variant)
Silicon Dioxide (SiO2)
mineral
Jasper Agate (specifically Brecciated Jasper with Agate inclusions)
Silicon Dioxide (SiO2)
mineral
Banded Agate (specifically Sardonyx or Carnelian Agate)
Silicon Dioxide (SiO2) - Chalcedony variety
mineral
Quartz (specifically Clear Quartz or Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Agate (specifically Botswana or Lake Superior style Agate)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
mineral
Quartz (specifically Clear Quartz or Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Aragonite (specifically Mexican Marbled Onyx)
Aragonite (Calcium Carbonate, CaCO3)
mineral
Quartz (specifically Citrine or Yellow Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz (specifically Milky or Clear Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz (specifically Milky/Yellow Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz (specifically Milky or Rose Quartz variant)
Silicon Dioxide (SiO2)
mineral
Agate (specifically Botswana or Lake Superior style chalcedony)
Silicon Dioxide (SiO2)
mineral
Quartz (specifically Milky or Clear Chunk)
Silicon Dioxide (SiO2)
mineral
Agate (specifically, likely a geode slice or nodule)
Agate (a variety of Chalcedony, with chemical formula SiO2)
Mineral
Banded Agate (specifically Sardonyx or Carnelian Agate)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
mineral
Agate (specifically Carnelian Agate or Sardagate)
Silicon dioxide (SiO2) - variety of chalcedony
mineral