Feldspar (specifically Orthoclase)
Potassium Aluminum Silicate (KAlSi3O8)
mineral
Category
Mineral, Specifically An Iron Ore
Browse mineral, specifically an iron ore specimens identified by the Rock Identifier community.
Pyrite
Pyrite (FeS2)
Mineral
Gold Ore in Matrix
Native Gold (Au) in Quartz/Host Rock
mineral
Amber
Succinite (specifically for Baltic Amber), Formula: C10H16O
Mineraloid
Turquoise (Rough Specimens)
Hydrous phosphate of copper and aluminium - CuAl6(PO4)4(OH)8·4H2O
mineral
Pink Granite
Phaneritic Felsic Igneous Rock (Rich in K-Feldspar)
igneous
Kunzite (variety of Spodumene)
Lithium Aluminum Silicate (LiAlSi2O6)
mineral
Jasper (specifically Yellow Jasper and Red Jasper)
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Labradorite (Feldspar)
Labradorite: (Ca,Na)(Al,Si)4O8
mineral
Green Aventurine
Quartz (Silicon Dioxide) with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)
mineral
Rough Emerald (Beryl)
Emerald (Be3Al2(SiO3)6 with Cr/V impurities)
mineral
Rainbow Fluorite
Calcium Fluoride (CaF2)
mineral
Slag (Industrial Glass)
Anthropogenic Vitreous Slag (Post-industrial byproduct)
igneous
Lepidolite
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2 (Lithium-bearing mica)
mineral
Pink Granite
Granite (Phaneritic Felsic Igneous Rock)
igneous
Granitic Pegmatite
Granite Pegmatite (coarse-grained intrusive igneous rock)
igneous
Black Veined Jasper (Spiderweb Jasper)
Silicon Dioxide (SiO2)
sedimentary
Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Chrysocolla in Matrix
Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Silicate/Secondary Copper Mineral)
mineral
Chalcedony (specifically Agate or Carnelian variety)
Cryptocrystalline Silica (SiO2)
mineral
Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Eudialyte
Eudialyte (Na4(Ca,Ce)2(Fe2+,Mn,Y)ZrSi8O22(OH,Cl)2)
mineral
Green Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Pyrite (or Fool's Gold)
Pyrite (FeS₂)
Mineral
Porphyry
Porphyritic Andesite/Basalt
igneous
Gneiss (specifically a weathered Amphibolite or Garnet Gneiss)
Gneiss (complex silicate composition)
metamorphic
Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Amethyst
SiO2 (Silicon Dioxide)
Mineral
Jasper (specifically Yellow and Red Jasper/Chert)
Silicon Dioxide (SiO2) with Iron Oxide inclusions
sedimentary
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Ruby
Corundum (Al2O3 with Chromium traces)
mineral
Galena
Lead(II) sulfide (PbS)
mineral
Chert (specifically Flint or Jasper variant)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Tumbled Moonstone and Amazonite Chips
Orthoclase (KAlSi3O8) and Microcline (KAlSi3O8) of the Feldspar Group
mineral
Milky Quartz
Quartz (Silica / Silicon Dioxide), SiO2
mineral
Quartz (Milky or Cloudy Quartz)
Silicon Dioxide (SiO2)
mineral
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Citrine Quartz
Citrine (Silicon Dioxide, SiO2)
mineral
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Manganese Oxide Crust on Limestone
Manganese Oxides (e.g., Pyrolusite MnO2 or Romanechite) on CaCO3
sedimentary
Jasper (specifically Polychrome or Desert Jasper)
Silicon Dioxide with impurities (SiO2)
Mineral