Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Category
Igneous, Sedimentary, And Metamorphic Mix
Browse igneous, sedimentary, and metamorphic mix specimens identified by the Rock Identifier community.
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Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Likely weathered sandstone or metasandstone
Quartz-rich sandstone (possibly weakly metamorphosed metasandstone)
sedimentary
Milky Quartz
Quartz (SiO2)
mineral
Asphalt (Bituminous Concrete)
Asphaltum / Bitumen-Aggregate Matrix
Technonatural composite (often containing sedimentary/igneous aggregate)
Pale green translucent mineral fragment, likely calcite
Calcite (CaCO₃), tentatively; possibly green fluorite or prehnite
mineral
Magnetite
Magnetite (Fe3O4)
mineral
Quartz (Rose Quartz or Jasper variety)
Silicon Dioxide (SiO2)
mineral
Mixed Chalcedony and Jasper Bracelet (possibly 'Ocean Jasper' or similar banded variety for brown beads, and blue/grey Chalcedony for the translucent beads)
Chalcedony (SiO2), Jasper (SiO2 with impurities)
Mineral (specifically a cryptocrystalline variety of Quartz)
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
White Quartz Star-cut crystal
Silicon Dioxide (SiO2)
mineral
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Likely quartz-rich metamorphic rock (quartzite or quartz-veined schist)
Quartzite/siliceous schist; chiefly quartz (SiO₂), with probable mica and iron-oxide staining
metamorphic
Chert (Jasper/Common Opal mix)
Microcrystalline Quartz (SiO2)
sedimentary
Fancy Jasper (Agate/Chert mix)
Silicon Dioxide (SiO2) with impurities
sedimentary
River Pebble (Greywacke or Chert mix)
Silicon Dioxide (SiO2) with varying mineral impurities
sedimentary
River Jasper (Chert/Chalcedony mix)
Silicon Dioxide (SiO2) with iron oxide and chlorite inclusions
sedimentary
River Stone (Chert/Basalt mix)
Microcrystalline Quartz (Chert) / Basalt
sedimentary
Quartz with Inclusions
Silicon Dioxide (SiO2)
mineral
Galena
Lead Sulfide (PbS)
mineral
Clear Quartz (Faceted Crystal)
Silicon Dioxide (SiO2)
mineral
Blue Apatite
Ca5(PO4)3(F,Cl,OH)
mineral
Diorite (River Pebble)
Diorite
igneous
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Orgonite Pyramid (containing Amethyst and mixed minerals)
Silicon Dioxide (SiO2) in synthetic resin
gemstone
Tumbled milky quartz
Quartz (silicon dioxide, SiO₂)
mineral
Blue Apatite
Calcium Fluorophosphate - Ca5(PO4)3F
mineral
Magnetite (Iron Ore)
Magnetite (Fe3O4)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
Mineral
Weathered iron-stained quartzite or chert nodule
Siliceous rock composed chiefly of microcrystalline quartz (SiO₂), with iron-oxide staining and possible clay/minor carbonate minerals
metamorphic
Raw quartz fragment
Quartz (SiO₂), likely milky or included quartz
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron sulfide (FeS2)
mineral
Milky Quartz
Silicon dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite in Quartz Matrix
Iron Sulfide (FeS2) embedded in Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral