Citrine Quartz
Silicon Dioxide (SiO2) with iron impurities
mineral
Category
Igneous And Mineral
Browse igneous and mineral specimens identified by the Rock Identifier community.
Learn about Igneous And Mineral in the encyclopedia
View all →
Mixed Mineral Specimens
Mixed Silicates, Oxides, and Phosphates (SiO₂, Ca₅(PO₄)₃(F,Cl,OH), Na₈Al₆Si₆O₂₄Cl₂, etc.)
mineral
Dalmatian Jasper
Peralkaline rhyolite with arfvedsonite inclusions
igneous
Milky Quartz with Matrix
Silicon Dioxide (SiO2)
mineral
Sodalite
Na8(Al6Si6O24)Cl2
mineral
Raw Corundum (Sapphire/Ruby variant)
Aluminum oxide (Al2O3)
mineral
Epidote with Quartz/Feldspar
Epidote (Ca2(Al, Fe)3(SiO4)3(OH)) with associated minerals in a host rock
Mineral/Metamorphic rock
Granite
Phaneritic Felsic Igneous Rock
igneous
Emerald in Matrix
Beryl (Be3Al2Si6O18)
mineral
Black Sand (Magnetite/Heavy Mineral Concentrate)
Magnetite-rich Placers (Fe3O4)
sedimentary
Fluorite Carving
Fluorite (Calcium Fluoride, CaF2)
mineral
Granite
Granite (Mainly Quartz, Feldspar, and Mica/Amphibole)
igneous
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Granite
Granite (Felsic Plutonic Rock)
igneous
Quartz / Quartzite
Silicon Dioxide (SiO2)
mineral / metamorphic
River Stone (likely Basalt or Greywacke)
Basalt with mineral veining
igneous
Magnetite (Loadstone candidate)
Iron(II,III) oxide (Fe3O4)
mineral
Milky Quartz with inclusions
Silicon Dioxide (SiO2)
mineral
Blue Zircon
Zircon (Zirconium Silicate), ZrSiO4
gemstone
Amygdaloidal Basalt
Amygdaloidal Mafic Volcanic Rock
igneous
Clear Quartz
Silicon Dioxide (SiO2)
Mineral
Amazonite
Microcline (KAlSi3O8)
mineral
Quartz / Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Potassium Feldspar (Orthoclase)
Orthoclase (KAlSi3O8)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Gneiss
Metamorphic Gneiss (High-grade regional metamorphism)
metamorphic
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral
Milky Quartz
Crystalline Quartz (SiO2)
mineral
Epidote
Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
mineral
Gneiss
Gneiss (Metamorphic rock)
metamorphic
Leopard Skin Jasper
Orbicular Jasper (Silicon Dioxide, SiO2)
sedimentary
Greenstone / Basalt with Amygdule
Amygdaloidal Basalt (altered to Greenstone)
igneous
Quartz (Milky or Cloudy)
Silicon Dioxide (SiO2)
mineral
Milky Quartz with Iron Inclusions
Silicon Dioxide (SiO2)
mineral
Quartz (Granular)
Silicon Dioxide (SiO2)
mineral
Snowflake Obsidian
Obsidian with Cristobalite inclusions (SiO2)
igneous
Orthoclase Feldspar
Potassium Feldspar (KAlSi3O8)
mineral
Calcite on Matrix
Calcium Carbonate (CaCO3)
mineral
Granite
Granite
igneous