Peach Moonstone
Potassium Aluminum Silicate (KAlSi3O8)
mineral
Category
Metamorphic Rock (Composed Of Multiple Minerals)
Browse metamorphic rock (composed of multiple minerals) specimens identified by the Rock Identifier community.
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Almandine Garnet
Almandine (Fe3Al2Si3O12)
mineral
Rough Tanzanite
Zoisite (Ca2Al3(SiO4)3(OH))
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Mica (Muscovite)
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Granite
Granite (composed of Quartz, Feldspar, and Mica/Amphibole)
igneous
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Quartzite River Pebble
Quartzite (primarily Silicon Dioxide, SiO2)
metamorphic
Diamond (or Cubic Zirconia simulant)
Carbon (C) - Diamond / Zirconium dioxide (ZrO2) - CZ
mineral
Biotite (Mica)
Biotite group (K(Mg,Fe)3AlSi3O10(F,OH)2)
mineral
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Pink Granite
Phaneritic Felsic Intrusive Igneous Rock
igneous
Pink Granite
Phaneritic Plutonic Igneous Rock (high K-feldspar content)
igneous
Quartz vein in Host Rock
Crystalline Silicon Dioxide (SiO2) in Lithic Matrix
metamorphic
Granite
Granite (Felsic Plutonic Rock)
igneous
Chert (Jasper-like)
SiO2 (Cryptocrystalline Quartz)
Sedimentary
Gneiss
Gneiss
metamorphic
Epidote
Epidote (Ca2(Al,Fe)3(SiO4)3(OH))
mineral
Green Aventurine
Silicon dioxide (SiO2) with fuchsite inclusions
mineral
Granite
Phaneritic plutonic rock (composed mainly of SiO2, Al2O3, K2O, and Na2O)
igneous
Granite
Granite (composed of Quartz, Alkali Feldspar, and Plagioclase)
igneous
Black Tourmaline
Schorl (Sodium Iron Aluminum Borosilicate Hydroxide), NaFe3Al6(BO3)3Si6O18(OH)4
mineral
Rhodonite
Rhodonite (Manganese Iron Magnesium Calcium Silicate - (Mn,Fe,Mg,Ca)SiO3)
mineral
Basalt with Granite Inclusions (Xenoliths)
Mafic igneous rock (Basalt) with Sialic minerals
igneous
Unakite
Epidotized Granite
metamorphic
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Magnetite
Iron(II,III) oxide (Fe3O4)
mineral
Porphyritic Basalt (with Pyrolusite or Iron-oxide staining)
Porphyritic Basalt (Mafic Extrusive)
igneous
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Greenstone (possibly Basalt or Greenschist)
Greenschist (composed primarily of chlorite, actinolite, and epidote)
Metamorphic (low-grade)
Banded Agate
Chalcedony / Silicon Dioxide (SiO2)
mineral
Amazonite
KAlSi3O8 (Potassium Aluminum Silicate) - a variety of Microcline Feldspar
mineral
Basalt with Iron Oxidation (Lattice/Veined)
Mafic Volcanic Rock (principally Plagioclase and Pyroxene)
igneous
Dumortierite Quartz (Blue Quartz)
Al7BO3(SiO4)3O3 (Aluminum Boro-silicate included in Quartz)
mineral
Slate
Foliated Metamorphic Rock
metamorphic
Slate
Slate (Metamorphic Rock)
metamorphic
Slate
Foliated metamorphic rock
metamorphic
Travertine
Travertine (CaCO3 - Calcium Carbonate)
sedimentary
Marble
Recrystallized Calcite (CaCO3) Rock
metamorphic
Quartz Pebble
Silicon Dioxide (SiO2)
mineral