Bornite
Bornite (Cu5FeS4)
Category
Browse mineral in igneous rock specimens identified by the Rock Identifier community.
Bornite
Bornite (Cu5FeS4)
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
Snowflake Obsidian
Volcanic glass containing Cristobalite (SiO2)
River Rock / Stream Pebble
Fluvial Clast / Rounded Sedimentary Particle
Larvikite
Monzonite (intermediate intrusive igneous rock containing plagioclase, alkali feldspar, and minor dark minerals)
Milky Quartz with Iron Inclusions
Quartz (Silicon Dioxide, SiO2)
Greenstone
Metabasalt / Chlorite-Epidote Schist
Basalt
Basalt (Mafic volcanic rock)
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
Sodalite
Sodalite (Na4Al3Si3O12Cl)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Yellow Quartz (Citrine/Yellow Jasper mix)
Silicon Dioxide (SiO2)
Clear Quartz (Crystal Quartz)
Silicon Dioxide (SiO2)
Fluorite
Calcium Fluoride (CaF2)
Granite
Phaneritic Felsic Igneous Rock
Granite
Granite (Phaneritic igneous rock consisting of Quartz, Feldspar, and Mica)
Gneiss (with Quartz and Biotite Mica)
Gneiss
Schist (Chlorite or Mica-rich)
Chlorite Schist
Amethyst (Purple), Sulfur (Yellow), and Blue Apatite
SiO2 (Quartz), S (Native Sulfur), Ca5(PO4)3(F,Cl,OH) (Apatite Group)
Peacock Ore
Bornite (Cu5FeS4)
Fluorite
Calcium Fluoride (CaF2)
Granite (Weathered)
Granite (Felsic Plutonic Rock)
Basalt
Basalt
Diorite
Diorite (Intermediate Plutonic Rock)
Rough Quartz in Pegmatite Matrix
Quartz (Silicon Dioxide - SiO2) in Granitic Pegmatite
Basalt with vesicles/amygdules
Basalt (containing volcanic glass and plagioclase)
Gneiss Pebble
Gneiss
Basalt
Basalt (Mafic volcanic rock)
Gneiss
Gneiss (a type of metamorphic rock)
Gneiss
Gneiss (quartz-feldspar-biotite gneiss)
Quartz (Citrine or Iron-Stained variety)
Silicon Dioxide (SiO2)
Banded Gneiss
Gneiss (Metamorphic high-grade, predominantly SiO2, Al2O3, K2O, Na2O)
Quartz
Quartz (SiO₂)
Micaceous Rock (likely Muscovite Schist/Gneiss or a Muscovite-rich Specimen)
Predominantly Muscovite (KAl2(AlSi3O10)(F,OH)2), often found in rocks like Muscovite Schist or Muscovite Gneiss.
Quartz Mineral
Silicon Dioxide (SiO2)
Obsidian
Obsidian (principally SiO2)
Basalt Pebble with Epidote/Olivine
Vitreous Basalt (SiO2 with Ca/Mg/Fe silicates)
Milky Quartz
Silicon Dioxide (SiO2)
Granite Pegmatite with Muscovite Mica
Granite Pegmatite (Silicon Dioxide and complex silicates)
Obsidian
Obsidian (Volcanic Glass), primarily SiO2 (Silicon Dioxide)
White Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Olivine in Basalt (Peridot)
Magnesium Iron Silicate (Mg, Fe)2SiO4 in Vesicular Basalt