Septarian Nodule (Yellow Jasper variety)
Septarian Nodule (comprising Calcite, Aragonite, and Limestone/Bentonite)
sedimentary
Category
Mineral, Specifically An Iron Ore
Browse mineral, specifically an iron ore specimens identified by the Rock Identifier community.
Moonstone (specifically Rainbow Moonstone / White Labradorite)
White Labradorite (Feldspar Group: (Na,Ca)(Al,Si)4O8)
mineral
Rainbow Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Chert (specifically Gray Chert)
Chert (SiO2)
sedimentary
Feldspar-rich Granite (Pink Granite)
Phaneritic Felsic Igneous Rock
igneous
Pink Granite / Gneiss
Felsic Plutonic Rock (Granite) with Gneissic banding
igneous / metamorphic
Greenstone Porphyry
Porphyritic Metavolcanic Rock
igneous
Prehnite
Prehnite - Ca2Al(AlSi3O10)(OH)2
mineral
Fluorite
Calcium fluoride (CaF2)
mineral
Silver (Jewelry Specimen)
Native Silver (Ag)
Mineral (Native Element)
Azurite
Azurite (Cu3(CO3)2(OH)2)
mineral
Peacock Ore (Bornite or Iridescent Chalcopyrite)
Bornite (Cu5FeS4) or Chalcopyrite (CuFeS2) with oxidation
mineral
Quartz (specifically Quartzite or Massive Quartz)
Silicon Dioxide (SiO2)
Mineral
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Native Copper
Native Copper (Cu)
mineral
Kunzite (Pink Spodumene)
Spodumene, LiAl(SiO3)2
mineral
Bornite (Peacock Ore)
Bornite (Cu5FeS4)
mineral
Rhodonite (in matrix)
Rhodonite (Mn,Fe,Mg,Ca)SiO3
Mineral
Rhodochrosite with Pyrite and Quartz
Manganese Carbonate (MnCO3)
mineral
Green Druzy Quartz (Prasiolite)
Silicon Dioxide (SiO2) with inclusions (typically Chlorite or Actinolite)
mineral
Satin Spar (Selenite)
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
mineral
Copper-bearing Quartz (likely Malachite on Quartz matrix)
Cu2CO3(OH)2 (Malachite) on SiO2 (Quartz)
mineral
Chert (specifically Iron-stained River Cobble)
Silicon Dioxide (SiO2)
sedimentary
Aventurine (specifically Green Aventurine)
Silicon Dioxide (Quartz) with inclusions of Fuchsite; SiO2 + K(Al,Cr)2AlSi3O10(OH)2
metamorphic
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Rhodochrosite
Manganese carbonate (MnCO3)
mineral
Ocean Jasper
Silicon Dioxide (SiO2) with various inclusions
Mineral (Variety of Quartz)
Malachite
Malachite (Cu2CO3(OH)2)
mineral
Hypersthene (or Enstatite/Ferrosilite)
Orthopyroxene series (Mg,Fe)SiO3 - specifically, historically hypersthene (intermediate member) now referred to as Enstatite (Mg-rich) or Ferrosilite (Fe-rich)
Mineral
Chert Nodule
Microcrystalline Quartz (SiO2)
sedimentary
Pyrite
Pyrite (FeS2)
Mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Rhodonite
Manganese silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Blue Quartzite
Quartzite (specifically a variety enriched with blue-coloring minerals)
Metamorphic Rock
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
metamorphic
Blue Quartzite
Quartzite with inclusions (often Dumortierite or Magnesio-riebeckite), SiO2
metamorphic
Malachite
Malachite (Copper Carbonate Hydroxide, Cu2CO3(OH)2)
mineral
Rhodochrosite
Manganese carbonate (MnCO3)
mineral
Plagioclase Feldspar (specifically Albite/Oligoclase)
(Na,Ca)(Si,Al)4O8
mineral
Moonstone (specifically White Moonstone/Adularia)
Potassium aluminum silicate ((K,Na)AlSi3O8)
mineral