Blue Apatite
Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)
Category
Browse sedimentary and metamorphic specimens identified by the Rock Identifier community.
Blue Apatite
Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)
Banded gneiss
Gneiss, commonly quartz–feldspar–mica gneiss
Apatite
Fluorapatite / Chlorapatite (Ca5(PO4)3(F,Cl,OH))
Magnetite (Lodestone variety)
Magnetite (Fe3O4)
Quartz
Silicon dioxide (SiO2)
Quartz pebble
Silicon dioxide (SiO2)
Clear Quartz
SiO2 (Silicon Dioxide)
Pink Quartz
Silicon Dioxide (Quartz), SiO2
Mica
Mica group (often Muscovite or Biotite)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Clear Quartz
Silicon Dioxide (SiO2)
Blue Apatite
Apatite (Group), Ca5(PO4)3(F,Cl,OH)
Small quartz-rich mineral fragment
Quartz (SiO₂), possibly milky or chalcedonic quartz
Banded gneiss (likely garnet-biotite or quartz-feldspar gneiss)
Gneiss; predominantly quartz (SiO₂), feldspar, and dark biotite/amphibole
Magnetite
Magnetite (Fe3O4)
Slate
Slate, a fine-grained metamorphic rock composed mainly of mica-group minerals and quartz
Slate
Slate; fine-grained metamorphosed shale, commonly quartz–muscovite/chlorite rich
Blue Apatite
Calcium Fluorophosphate - Ca5(PO4)3F
Magnetite (Iron Ore)
Magnetite (Fe3O4)
Quartz
Silicon Dioxide (SiO2)
Apatite
Calcium phosphate fluoride/chloride, Ca5(PO4)3(F,Cl,OH)
Apatite
Calcium phosphate fluoride/chloride, Ca5(PO4)3(F,Cl,OH)
Quartz (Rose Quartz or Jasper variety)
Silicon Dioxide (SiO2)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Kyanite
Kyanite (Al2SiO5)
Likely slate fragments
Slate, a fine-grained metamorphic rock composed chiefly of quartz, mica, and chlorite
Quartz Pebble
Silicon Dioxide (SiO2)
Magnetite or Ironstone Nodule
Magnetite (Fe3O4) or Hematite-rich Sedimentary Nodule
Pyrite
Iron sulfide (FeS2)
Quartz pebble
Silicon dioxide (SiO2)
Clear Quartz (Faceted) or Cubic Zirconia / Glass imitation
SiO2 (if Quartz), ZrO2 (if Cubic Zirconia)
Sphalerite
Zinc Sulfide (ZnS)
Blue Apatite
Fluorapatite (Ca5(PO4)3(F,Cl,OH))
Blue Apatite
Ca5(PO4)3(F,Cl,OH)
Yellow Apatite
Fluorapatite (Ca5(PO4)3(F,Cl,OH))
Feldspar
Feldspar (Orthoclase/Microcline)
Pyrite Nodules / Weathered Pyrite
Iron Sulfide (FeS2)
Blue Apatite
Ca5(PO4)3(F,Cl,OH)
Clear Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Banded gneiss
Foliated gneiss, likely quartz–feldspar–biotite or amphibole gneiss
Magnetite
Magnetite (Fe3O4)