Green Aventurine
Silicon Dioxide (Quartz with Fuchsite inclusions) - SiO2
mineral
Category
Metamorphic Rock (Composed Of Multiple Minerals)
Browse metamorphic rock (composed of multiple minerals) specimens identified by the Rock Identifier community.
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Quartz with Schorl inclusions
Silicon Dioxide (SiO2) with Sodium Iron Aluminum Borosilicate Hydroxide (Black Tourmaline)
mineral
Fossiliferous Limestone
Limestone (composed primarily of calcite with included fossils CaCO3)
Sedimentary
Magnetite
Magnetite (Fe3O4)
mineral
Schist
Mica Schist
metamorphic
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with iron oxide inclusions)
metamorphic
Granite
Granite (composed primarily of Quartz, Alkali Feldspar, and Plagioclase)
igneous
Nephrite Jade
Ca2(Mg,Fe)5Si8O22(OH)2
metamorphic
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Blue Quartz
Quartz (Silicon Dioxide) with blue inclusions (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Serpentinite (often containing Jadeite/Nephrite)
Antigorite-rich Serpentine Rock, (Mg, Fe)3Si2O5(OH)4
metamorphic
Quartz pebble / River stone
SiO2 (Silicon Dioxide)
mineral
Granitic Pegmatite (River Rock specimen)
Granite / Pegmatite (composed of SiO2, KAlSi3O8, and NaAlSi3O8)
igneous
Serpentine
Antigorite/Lizardite/Chrysotile group, Mg3Si2O5(OH)4
metamorphic
Beryl (likely Emerald or Aquamarine in matrix)
Beryllium aluminum silicate (Be3Al2Si6O18)
mineral
Tiger's Eye (Mineral Collection)
Tiger's Eye (SiO2 with crocidolite inclusions)
mineral
Sandstone
Arenite
sedimentary
Banded Sandstone
Arenite (with iron oxide banding)
sedimentary
Sandstone (Ferruginous)
Arenite (Siliclastic Sedimentary Rock)
sedimentary
Metaconglomerate
Metaconglomerate (Quartzite conglomerate)
metamorphic
Sandstone
Quartz Arenite (a common type of sandstone, given the appearance), Arkose, Greywacke (depending on mineralogy)
Sedimentary Rock
Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Sandstone (with Iron Staining)
Clastic Sedimentary Rock (primarily Quartz, SiO2)
sedimentary
Granitic Pegmatite
Pegmatite (Quartz: SiO2, Feldspar: KAlSi3O8, Mica: KAl2(AlSi3O10)(OH)2)
Igneous
Magnetite / Hematite rich ore
Magnetite (Fe3O4) or Hematite (Fe2O3)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Marble
Recrystallized Carbonate Rock (CaCO3)
metamorphic
Biotite (Mica)
K(Mg,Fe)3AlSi3O10(OH,F)2
mineral
Emerald in Matrix
Beryl (Be3Al2Si6O18)
mineral
Basalt
Extrusive Mafic Igneous Rock (composed primarily of Plagioclase, Pyroxene, and Olivine)
igneous
Siltstone Pebble
Siltstone (composed of hydraulic-sorted silt-sized particles)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Colorless Quartz (Rhinestone)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon dioxide (SiO2)
mineral
Quartz
Quartz (Silicon Dioxide - SiO2)
Mineral
Rough Emerald in Matrix
Beryl (Be3Al2Si6O18) with trace Chromium/Vanadium
mineral
Quartz Vein in Host Rock (Likely Slate or Shale)
Hydrothermal Quartz (SiO2) in Pelitic host rock
metamorphic
Basalt with Epidote
Mafic volcanic rock with Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
igneous