Sunstone
(Ca,Na)((Al,Si)2Si2)O8 (Plagioclase Feldspar)
mineral
Category
Metamorphic Or Igneous (Context Dependent)
Browse metamorphic or igneous (context dependent) specimens identified by the Rock Identifier community.
Learn about Metamorphic Or Igneous (Context Dependent) in the encyclopedia
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Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Citrine
Silicon Dioxide (SiO2)
mineral
White Sapphire
Corundum (Al2O3)
mineral
Quartz Fragment
Silicon Dioxide (SiO2)
mineral
Smoky Quartz (Faceted Beads)
Silicon Dioxide (SiO2)
mineral
Educational Geologic Collection
Mixed Mineral and Rock Collection (Various compositions)
mineral
Assorted Decorative Tumbled Stones (Quartz, Sodalite, Aventurine, Calcite)
Mixed Silicates and Carbonates (SiO2, Na8(Al6Si6O24)Cl2, CaCO3)
mineral
Calcite
Calcium Carbonate (CaCO3)
mineral
Greenstone
Metabasalt / Greenschist
metamorphic
Gneiss
Gneiss (Foliated Metamorphic Rock)
metamorphic
Pyrite
Pyrite (Iron Disulfide), FeS2
Mineral
Basalt Pebble
Aphanitic Mafic Igneous Rock
igneous
Lapis Lazuli
Lazurite-rich metamorphic rock (approx. Na6Ca2(Al6Si6O24)(S,SO4,Cl)1,2)
metamorphic
Graphite
Graphite (Native Carbon), Formula: C
Metamorphic
Gneiss
Metamorphic Gneiss
metamorphic
Biotite Schist
Biotite Gneiss/Schist (approximate formula K(Mg,Fe)3AlSi3O10(OH)2)
metamorphic
Gneiss
Foliated Metamorphic Rock
metamorphic
Gneiss
Gneiss (Metamorphic rock)
metamorphic
Unidentified gray rock/mineral specimen
Indeterminate; possibly quartz-rich rock or a metallic sulfide-bearing specimen
mineral
Quartz (Druzy) on Matrix
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz (with trace inclusions)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Smoky/Clear variety)
Silicon Dioxide (SiO2)
mineral
Amphibolite / Hornblende Schist
Amphibolite
metamorphic
Greenschist
Chlorite schist
metamorphic
Greenschist
Chlorite schist
metamorphic
Greenschist
Chlorite schist
metamorphic
Greenstone
Metamorphic Greenstone (Greenschist facies)
metamorphic
Epidote
Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
mineral
Quartzite with Mafic Intrusion (Gneiss/Schist Contact)
Metamorphic Quartzite (SiO2) with Amphibole/Biotite Schist
metamorphic
Gneiss (Metamorphic Pebble)
Gneissic Metamorphic Rock
metamorphic
Banded Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Banded Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Greenschist
Greenschist (chlorite schist)
metamorphic
Greenschist
Greenschist
metamorphic
Lapis Lazuli
Lapis Lazuli (Rock composed primarily of lazurite, calcite, and pyrite)
metamorphic
Lapis Lazuli
Lapis Lazuli (Complex aggregate of Lazurite, Calcite, and Pyrite)
metamorphic
Basalt Pebble
Extrusive Igneous Rock
igneous
Magnetite / Hematite (Iron Ore Pebble)
Fe3O4 (Magnetite) / Fe2O3 (Hematite)
mineral