Granite
Phaneritic Granitoid
Category
Browse sedimentary or igneous associated mineral specimens identified by the Rock Identifier community.
Granite
Phaneritic Granitoid
Diorite
Diorite (intermediate intrusive igneous rock)
Polished fluorite sphere
Fluorite (calcium fluoride, CaF₂)
Iolite (Cordierite)
Cordierite (Magnesium Aluminum Silicate), Mg2Al4Si5O18
Ruby
Corundum (Al2O3)
Greenstone (Greenstone River Pebble)
Greenschist (metamorphosed mafic igneous rock)
Granite (weathered/river-tumbled)
Granite (Plutonic Igneous Rock)
Red Jasper (Opaque Chalcedony)
Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions
Chrome Diopside
Magnesium Calcium Silicate (MgCaSi2O6) containing Chromium impurities
Que Sera Stone (Llanite with Feldspar and Quartz)
Rhyolite with blue quartz and pink orthoclase (Llanite-type quartz porphyry)
Jasper
Silicon Dioxide (Microcrystalline Quartz, SiO2)
Apatite
Ca5(PO4)3(F,Cl,OH)
Yellow Calcite
Calcite (Calcium Carbonate, CaCO3)
Rhodochrosite
Manganese carbonate (MnCO3)
Red Jasper
Silicon dioxide with hematite impurities (SiO2 + Fe2O3)
Greenstone (Epidote/Chlorite Schist)
Metabasalt (composed primarily of Epidote Ca2Al2(Fe3+;Al)(SiO4)(Si2O7)O(OH) and Chlorite (Mg,Fe)3(Si,Al)4O10(OH)2·(Mg,Fe)3(OH)6)
Granite
Granite (Felsic Plutonic Rock)
Weathered iron-rich rock, likely limonite-bearing sandstone or laterite
Limonite/goethite-rich ferruginous rock; composition commonly FeO(OH)·nH₂O with quartz and clay minerals
Mica Schist
Mica Schist (varies based on mineral makeup, often Biotite/Muscovite schist)
Jasper (Zebra Jasper)
Silicon Dioxide (SiO2) with impurities
Glacial Cobble with Granite Inclusion
Porphyritic Basalt or Andesite containing Granitic Xenolith
Weathered volcanic rock, likely basalt
Basalt; commonly composed of plagioclase, pyroxene, and iron-rich oxides
Yellow Jasper
Silicon Dioxide (SiO2) with Goethite/Limonite inclusions
Greenschist (Chlorite Schist)
Greenschist (containing chlorite, actinolite, and epidote)
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Petrified Wood
Silicified wood / Xylopal
Red Jasper (Silicate Chert)
Silicon Dioxide (SiO2) with iron oxide inclusions
Amazonite
Amazonite (KAlSi3O8); a green variety of Microcline feldspar
Pyrite
Iron Sulfide (FeS2)
Green Fluorite
Fluorite (Calcium Fluoride, CaF2)
Celestine (or Celestite)
Strontium sulfate (SrSO4)
Chert (Green Chert or Jasper)
Silicon Dioxide (SiO2)
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Granodiorite
Granodiorite (phaneritic intrusive igneous rock)
Chert (variously known as Flint or Jasper)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Biotite Mica
K(Mg,Fe2+)3(Al,Fe3+)Si3O10(OH,F)2
Red Jasper
Cryptocrystalline Quartz (SiO2 with Iron oxide inclusions)
Petrified Wood
Silicified wood (primarily quartz, SiO2)
Chert (Nodular Chert)
Silicon Dioxide (SiO2)
Jasper
Microcrystalline Quartz (SiO2)
Green Jasper
Quartz (Silicon Dioxide, SiO2) with iron silicate inclusions
Native Sulfur
Sulfur (S)