Nephrite Jade
Ca2(Mg,Fe)5Si8O22(OH)2
metamorphic
Category
Mineral, Often Found As A Rock (Metamorphic)
Browse mineral, often found as a rock (metamorphic) specimens identified by the Rock Identifier community.
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Quartzite Geode or Crystalline Quartz Node
Silicon Dioxide (SiO2)
metamorphic
Fuchsite Gneiss or Schist
Muscovite (variety Fuchsite) within Metamorphic Host Rock
metamorphic
Quartzite with Dendritic Manganese Oxide Inclusions
Metamorphic Quartzite (SiO2 with Mn-oxides)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Garnet Schist
Almandine Garnet-bearing Mica Schist
metamorphic
Tiger Iron
Tiger Iron (Composition: SiO2, Fe2O3, Fe3O4)
metamorphic
Zircon
Zircon (Zirconium Silicate - ZrSiO4)
mineral
Quartz Veined Rock (Likely Graywacke or Quartzite)
Silicon Dioxide (SiO2) veins in Metasedimentary matrix
metamorphic
Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite mica
mineral
Limonite Concretion (Ironstone)
Limonite (FeO(OH)·nH2O) / Goethite
sedimentary
White Quartz
Silicon Dioxide (SiO2)
mineral
Unakite
Altered Granite (Granitic Metamorphic Rock)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Blue Lace Agate
Agate (Variety of Chalcedony, SiO2)
sedimentary
Epidote
Epidote (formula: Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
mineral
Chert (Flint)
Silicon Dioxide (SiO2)
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Quartzite pebble
Quartzite (composed primarily of Quartz, SiO2)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Black Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Chert (Jasper/Flint variety)
Silicon Dioxide (SiO2)
sedimentary
Yellow Chert (Chert / Cryptocrystalline Quartz)
Silicon Dioxide (SiO2)
sedimentary
Chert (Nodule)
Chert (Silica, SiO2)
sedimentary
Quartzite Cobble
Quartzite (primarily SiO2)
metamorphic
Slate
Slate (Foliated Metamorphic Rock)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Chert (White Chert or Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Epidosite (Epidote-Quartz rock)
Epidote-rich hydrothermal rock
metamorphic
Quartz (Raw Crystal)
Silicon Dioxide (SiO2)
mineral
Chert (White Chert/Flint)
Chert (SiO2)
sedimentary
Chert
Opaline or Microcrystalline Jasper/Chert (SiO2)
sedimentary
Emerald in Matrix
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
gemstone
Green Quartz / Prasiolite
Silicon Dioxide (SiO2)
mineral
Tiger's Eye (Brown/Dark variety)
Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions)
metamorphic
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Chert (Flint)
Silicon Dioxide (SiO2)
sedimentary
Tiger's Eye
Pseudomorph of Crocidolite (SiO2 with iron oxides)
mineral
Gemstone Sand (Mineral Assortment)
Mixed Mineral Concentrates (Commonly including Quartz SiO2, Garnet X3Y2(SiO4)3, and Tourmaline (Na,Ca)(Li,Mg,Al)3(Al,Fe,Mn)6(BO3)3(Si6O18)(OH,F)4)
mineral
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Chrysoprase
Chalcedony (cryptocrystalline silica containing nickel); Chemical Formula: SiO2 with Ni impurities
mineral