Orange Calcite
Calcite (CaCO3)
Mineral
Category
Man Made Material (Simulated Mineral)
Browse man made material (simulated mineral) specimens identified by the Rock Identifier community.
Feldspathic Granite (likely Syenite or Granite Pegmatite)
Phaneritic Acidic Igneous Rock (KAlSi3O8 dominant with SiO2)
igneous
Slag (Industrial Glass)
Artificial Vitreous Silicate
mineraloid (anthropogenic)
Aquamarine with Sunstone
Aquamarine (Be3Al2Si6O18), Sunstone (Na,Ca)Al(Si,Al)Si2O8
Mineral
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Banded Chert
Microcrystalline Quartz (SiO2)
sedimentary
Quartz (Crystal/Druzy Quartz)
Quartz (SiO₂)
Mineral
Quartz
Silicon Dioxide (SiO2)
Mineral
Chert (varietal Flint)
Chert (SiO2)
sedimentary
Chert
Microcrystalline silica (SiO2)
sedimentary
Quartz
Silicon Dioxide (SiO2)
Mineral
Lapis Lazuli
Complex metamorphic rock consisting mainly of Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, Calcite, and Pyrite
metamorphic
Quartz
Silicon dioxide (SiO2)
Mineral
Olivine in Basalt
Peridotite / Forsterite ((Mg,Fe)2SiO4)
igneous
Cobalt Blue Slag Glass
Amorphous Silicon Dioxide (anthropogenic) with Cobalt additives
mineraloid
Quartz (River-worn Pebble)
Quartz (SiO2)
Mineral
Limestone (Weathered Aggregate)
Sedimentary Carbonate Rock (CaCO3)
sedimentary
Chalcedony Geode
Chalcedony (SiO2) within a geode structure
Mineral Geode/Sedimentary or Volcanic related
Serpentine Schist with Quartz Vein
Serpentine Schist (a type of Metamorphic rock). The white band is likely Quartz (SiO2).
Metamorphic
Chert (Flint)
Chert (SiO2)
sedimentary
Milky Quartz (Gold-bearing Prospecting Specimen)
Silicon Dioxide (SiO2)
mineral
Jasper, possibly Brecciated Jasper or Ocean Jasper due to patterns and color
Silicon Dioxide (SiO2), a variety of Chalcedony
Sedimentary Rock
Basalt
Extrusive mafic igneous rock; primarily (Ca,Na)(Mg,Fe,Al,Si)2O6 with (Ca,Na)(Al,Si)4O8
igneous
Gneiss
Gneiss (a type of metamorphic rock)
Metamorphic Rock
Limestone
Calcareous sedimentary rock (primarily Calcium Carbonate, CaCO3)
sedimentary
Quartz Geode (partially formed/chalcedony with iron staining)
Quartz (SiO2) with Chalcedony (cryptocrystalline quartz) and likely Iron Oxides/Hydroxides
Mineral/Sedimentary Rock Feature
Olivine (Peridotite)
(Mg,Fe)2SiO4 (Magnesium Iron Silicate)
igneous
Basalt
Basalt (Aphanitic Mafic Igneous Rock)
igneous
Granite Pebble
Granite (Phaneritic intrusive igneous rock consisting of Quartz, Alkali Feldspar, and Plagioclase)
igneous
Granite Pebble
Granite; primarily composed of Quartz (SiO2), Feldspar (KAlSi3O8), and Mica
igneous
Chert (Flint)
Silicon Dioxide (SiO2)
sedimentary
Chert / Flint
Silicon Dioxide (SiO2)
sedimentary
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Quartz
Quartz (Silicon Dioxide, SiO2)
Mineral
Tiger's Eye
Silicon dioxide with crocidolite fibers (SiO2 with chrysotile amphibole inclusions)
Mineral
Dioptase
Dioptase (CuSiO3 · H2O)
mineral
Quartzite Pebble
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Sandstone (with Manganese staining)
Arenite (composed primarily of SiO2)
sedimentary
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Marble
Recrystallized Calcite (CaCO3)
metamorphic
Basalt (Vesicular)
Vesicular Basalt
Igneous