Milky Quartz with Iron Inclusions
Quartz (Silicon Dioxide, SiO2)
mineral
Category
Sedimentary Like (Industrial Composite)
Browse sedimentary like (industrial composite) specimens identified by the Rock Identifier community.
Coal (Bituminous or Anthracite)
Carbonaceous sedimentary rock (primarily Carbon, C)
sedimentary
Peridot in Basalt
Olivine ((Mg, Fe)2SiO4) in Basalt
mineral
Slag Glass
Vitreous Silicate Residue
industrial byproduct (anthropogenic rock)
Polymer Clay (Mock Mineral)
Polyvinyl chloride (PVC) with plasticizers and pigment
Synthetic material (Not a natural rock/mineral)
Quartzite
Quartzite (primarily SiO2)
metamorphic
Agate
Chalcedony (SiO2)
mineral
Moqui Marble
Iron Oxide Concretion
sedimentary
Quartz Vein in Host Rock (clastic sediment)
Silicon Dioxide (SiO2) in matrix
sedimentary
Pumice
Pumice (volcanic glass formed of highly vesicular rough textured rock)
igneous
Green Jasper
Silicon Dioxide (SiO2)
sedimentary
Jasper containing Agate (Jaspagate)
Silicon Dioxide (SiO2)
sedimentary
Aluminum Slag
Anthropogenic Aluminum (Al)
mineral
Banded Gneiss (River Rock/Pebble)
Gneiss (specifically a banded variety often found as a river rock)
Metamorphic Rock
Milky Quartz Mushroom Carving
Quartz (Silicon Dioxide, SiO2)
mineral
Marble
Recrystallized Calcite (CaCO3) Rock
metamorphic
Granite Pegmatite
Coarse-grained Granite (SiO2 - Aluminum and Alkalies)
igneous
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
South Korean 100 Won Coin (Cupronickel)
Cupronickel Alloy (75% Cu, 25% Ni)
mineral-based alloy (anthropogenic)
Almandine Garnet
Almandine (Fe3Al2Si3O12)
mineral
Desert Rose
Gypsum or Barite (CaSO4·2H2O or BaSO4)
mineral
Blue Kyanite
Kyanite (Al2SiO5)
mineral
Mica Schist
Mica Schist (primarily Muscovite and Biotite KAl2(AlSi3O10)(OH)2)
metamorphic
Anthracite Coal
Anthracite
metamorphic
White Sapphire
Corundum (Al2O3)
mineral
Desert Rose (Sand Barite/Gypsum Rose)
Barium Sulfate (BaSO4) or Hydrated Calcium Sulfate (CaSO4·2H2O)
mineral
Granitic Pegmatite
Granite Pegmatite (principally KAlSi3O8, SiO2, and KAl2(AlSi3O10)(OH)2)
igneous
Quartz (Agate/Chalcedony variety)
Silicon Dioxide (SiO2)
mineral
Cubic Zirconia (Faceted)
Zirconium dioxide (ZrO2)
mineral
Quartz Vein in Host Rock
Quartz (SiO2) in metamorphic host rock (likely schist or phyllite)
metamorphic
Granite Pegmatite
Phaneritic Felsic Igneous Rock (Granite)
igneous
Mica Schist
Mica Schist
metamorphic
Slag Glass (Cullet)
Amorphous Silicon Dioxide (SiO2) with metal oxide colorants
Anthropogenic (Man-made)
Slag (Industrial Glass)
Anthropogenic Vitreous Slag (Post-industrial byproduct)
igneous
Ferrochrome Slag
Anthropogenic slag (Fe-Cr alloy waste)
industrial byproduct
Quartz Druze on Matrix
Silicon Dioxide (SiO2)
mineral
Quartz (Variety: Citrine or Tumbled Chalcedony)
Silicon Dioxide (SiO2)
mineral
Chert (Tripolitic Chert / Flint Nodules)
Microcrystalline Quartz (SiO2)
sedimentary
Crushed Limestone
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Crushed Stone / Gravel
Aggregatus saxum (variable mineral composition)
sedimentary
Yellow Quartz (Citrine or Iron-stained Quartz)
Silicon Dioxide (SiO2)
mineral
Chlorite (Small Flakes/Sand)
Chlorite Group (Magnesium Iron Aluminum Silicate Hydroxide - (Mg,Fe)3(Si,Al)4O10(OH)2·(Mg,Fe)3(OH)6)
mineral