Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Category
Browse sedimentary and igneous specimens identified by the Rock Identifier community.
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Pyrite
Iron Sulfide (FeS2)
Quartz (Small Fragment)
Silicon Dioxide (SiO2)
Dalmation Stone (Dalmation Jasper)
Peralkaline rock (primarily Feldspar and Quartz with Arfvedsonite spots)
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Pyrite
Iron Sulfide (FeS2)
Mixed Tumbled Rocks and Minerals Collection
Mixed Minerals and Rocks (Quartz, Feldspar, Jasper, Agate, Lapis Lazuli, Sodalite, Rose Quartz, Fluorite, etc.)
Magnetite (Lodestone)
Iron(II,III) oxide (Fe3O4)
Dalmatian Stone (often misnamed Dalmatian Jasper)
Aplite (with hornblende/arfvedsonite inclusions)
Dalmation Jasper
Aplite with Arfvedsonite inclusions (SiO2 with Na3(Mg,Fe2+)4AlSi8O22(OH)2)
Dalmatian Jasper
Peralkaline Quartz-Feldspar Porphyry with Arfvedsonite
Dalmatian Stone (Dalmatian Jasper)
Dalmatian Stone (A variety of Perthite / Aplite)
Magnetite
Magnetite (Iron(II,III) oxide, Fe3O4)
Dalmatian Jasper
Peralkalic Quartz-Feldspar Porphyry
Dalmatian Stone
Peralkaline rhyolite
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Milky Quartz in Matrix
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
White Quartz (Milky Quartz)
Quartz (Silicon Dioxide - SiO2)
Quartz on Matrix
Silicon Dioxide (SiO2)
Quartz (Pebble)
Silicon Dioxide (SiO2)
Gravel / Small Pebble
Rock Fragment (Gravel)
Fluorite
Calcium Fluoride (CaF2)
Zoisite with Rubellite (Ruby in Zoisite)
Zoisite with inclusions of Hornblende (Anyolite)
Clear Quartz (Rock Crystal) Bracelet
Silicon Dioxide (SiO2)
Apatite
Fluorapatite / Chlorapatite (Ca5(PO4)3(F,Cl,OH))
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Agate
Chalcedony (SiO2) with impurities
Clear Quartz
Silicon Dioxide (SiO2)
Zoisite with Ruby
Anyolite (Calcium aluminum hydroxy silicate with Corundum) Ca2Al3(SiO4)3(OH)
Clear Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Chalcedony
Chalcedony (SiO2)
Clear Quartz Crystal
Silicon Dioxide (SiO2)
Magnetic Sand Grain / Magnetite Pellet
Magnetite (Fe3O4)
Garnet (specifically Almandine)
Almandine - Fe3Al2(SiO4)3
Quartz (Granular)
Silicon Dioxide (SiO2)
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Quartz Crystal Fragment
Silicon Dioxide (SiO2)
Pebble (likely Quartz or Chert)
SiO₂ (Silicon Dioxide) - referring to the likely main mineral composition, Quartz. If it's chert, the scientific name remains SiO₂ with a microcrystalline structure.
Dalmatian Stone (often called Dalmatian Jasper)
Peralkaline Feldsphathic Igneous Rock
White Quartz Beads
Silicon Dioxide (SiO2)