Jasper (specifically Polychrome or Desert Jasper)
Silicon Dioxide (SiO2) with impurities
Category
Browse sedimentary or igneous associated mineral specimens identified by the Rock Identifier community.
Jasper (specifically Polychrome or Desert Jasper)
Silicon Dioxide (SiO2) with impurities
Unidentified metallic-looking mineral fragment
Indeterminate; possible galena, magnetite, or metal-rich sulfide/ore fragment
Chalcopyrite
Copper Iron Sulfide (CuFeS2)
Galena
Lead Sulfide (PbS)
Biotite Schist
Biotite Schist (K(Mg,Fe)3AlSi3O10(OH,F)2)
Galena
Lead Sulfide (PbS)
Chalcopyrite
Copper Iron Sulfide (CuFeS2)
Rainbow Fluorite
Fluorite (Calcium Fluoride, CaF2)
Fluorite Bracelet
Calcium Fluoride (CaF2)
Epidote with Quartz Vein
Epidote-bearing metamorphic rock with quartz (Ca2(Al,Fe)3(SiO4)3(OH))
Pyrite
Iron Sulfide (FeS2)
Pyrulite (Pyrite / Chalcopyrite)
Iron Sulfide (FeS2) or Copper Iron Sulfide (CuFeS2)
Pyrite
Iron Sulfide (FeS2)
Fluorite
Calcium Fluoride (CaF2)
Pyrite
Iron Sulfide (FeS2)
Gold
Native Gold (Au)
Gold Mineral
Native Gold (Au)
Raw Fluorite
Calcium Fluoride (CaF2)
Foliated metamorphic cobble, likely gneiss
Biotite–quartz–feldspar gneiss (tentative)
Garnet Gneiss
Garnetiferous quartzo-feldspathic gneiss
Green Fluorite
Calcium Fluoride (CaF2)
Dalmatian jasper
Dalmatian stone; commonly a leucocratic alkali-feldspar-rich igneous rock with arfvedsonite or aegirine inclusions
Pyrite
Iron Disulfide (FeS2)
Pyrite
Iron Disulfide (FeS2)
Geode (Unopened)
Quartz/Chalcedony concretion
Imperial Topaz
Al2SiO4(F,OH)2
Pyrite (locally known as Fool's Gold)
Iron Sulfide (FeS2)
Turquoise
CuAl6(PO4)4(OH)8·4H2O
Fluorite
Calcium Fluoride (CaF2)
Green Fluorite
Calcium Fluoride (CaF2)
Fluorite
Calcium Fluoride (CaF2)
Yellow Quartz (Citrine / Milky Quartz)
Silicon Dioxide (SiO2)
Fluorite
Calcium Fluoride (CaF2)
Dalmation Stone
Peralkaline Rock (mixed silicate minerals)
Native Gold
Native Gold (Au)
Gold Nugget
Native Gold (Au)
Quartz vein fragment
Quartz, silicon dioxide (SiO₂), likely milky to translucent quartz with iron-oxide or clay inclusions
Pyrite-bearing Rock
Iron Sulfide (FeS2) associated with host rock
Quartz Geode / Druzy Quartz Node
Silicon Dioxide (SiO2)
Green Fluorite
Calcium Fluoride (CaF2)
Agate Geode
Silicon Dioxide (SiO2) - Chalcedony variety
Dalmatian Stone
Dalmatian Jasper (Aplitic Rock)