Quartz
Silicon Dioxide (SiO2)
mineral
Category
Igneous, Sedimentary, Metamorphic, Mineral, Gemstone, Fossil, Or Meteorite
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Blue Apatite
Apatite (Ca5(PO4)3(F,Cl,OH))
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Polished operculum (“Shiva eye” shell)
Calcium-carbonate shell operculum, commonly from a turban snail (family Turbinidae); not a mineral specimen
fossil
Quartz
Silicon Dioxide (SiO2)
mineral
Blue Apatite
Calcium phosphate fluorapatite, Ca5(PO4)3(F,Cl,OH)
mineral
Conical fossil shell or shell fragment
Likely a gastropod shell fragment; exact taxon indeterminate from the image
fossil
Blue Apatite
Calcium Phosphate Fluoride/Chloride/Hydroxide, Ca5(PO4)3(F,Cl,OH)
mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3(F,Cl,OH))
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Blue Apatite
Calcium phosphate fluoride/chloride, Ca5(PO4)3(F,Cl,OH)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Peridot
Olivine (Magnesium Iron Silicate), (Mg, Fe)2SiO4
mineral
Graphite
Graphite (Chemical Formula: C)
Mineral (Native Element)
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Olivine in Quartz/Feldspar Matrix (Peridotite or Granitic Pegmatite)
(Mg,Fe)2SiO4 (Olivine) with Quartz / Feldspar
igneous
Ironstone Concretion
Ironstone (Limonite/Goethite/Hematite mixture)
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Apatite
Ca5(PO4)3(F,Cl,OH)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
White Quartz
Silicon Dioxide (SiO2)
mineral
Weathered sandstone pebble
Quartz-rich sandstone, likely ferruginous sandstone
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Fossil gastropod in granite-like stone
Gastropoda indet.; enclosing rock likely polished granite or gneiss
fossil
Quartz
Silicon Dioxide (SiO2)
mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3(F,Cl,OH))
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3(F,Cl,OH))
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral