Rock Identifier

Category

Mineral Based Composite

Browse mineral based composite specimens identified by the Rock Identifier community.

Learn about Mineral Based Composite in the encyclopedia

Pyroxenite

Blue Goldstone (Aventurine Glass (Silicon Dioxide with metal inclusions)) — man-made glass mineral simulant

Blue Goldstone

Aventurine Glass (Silicon Dioxide with metal inclusions)

man-made glass mineral simulant

Muscovite (Muscovite mica, KAl2(AlSi3O10)(OH)2) — mineral

Muscovite

Muscovite mica, KAl2(AlSi3O10)(OH)2

Likely biotite-rich schist (Mica schist, likely biotite-rich; exact minerals cannot be confirmed from the photo) — metamorphic

Likely biotite-rich schist

Mica schist, likely biotite-rich; exact minerals cannot be confirmed from the photo

Schist with Quartz Vein (Mica Schist with Crystalline Quartz (SiO2)) — metamorphic

Schist with Quartz Vein

Mica Schist with Crystalline Quartz (SiO2)

Dinosaur Bone (Agatized Dinosaur Bone) — sedimentary/fossil

Dinosaur Bone

Agatized Dinosaur Bone

sedimentary/fossil

Schist (Mica Schist) — metamorphic

Schist

Mica Schist

Red heart-shaped glass bead in a wire-wrapped jewelry charm (Likely colored glass (amorphous silica-based material); the image does not show an identifiable geological specimen) — gemstone

Red heart-shaped glass bead in a wire-wrapped jewelry charm

Likely colored glass (amorphous silica-based material); the image does not show an identifiable geological specimen

Basalt with Vesicular/Amygdaloidal Alteration (Extrusive Igneous Rock (Mafic)) — igneous

Basalt with Vesicular/Amygdaloidal Alteration

Extrusive Igneous Rock (Mafic)

Greenschist (Chlorite Schist) (Greenschist (containing Chlorite, Actinolite, and Epidote)) — metamorphic

Greenschist (Chlorite Schist)

Greenschist (containing Chlorite, Actinolite, and Epidote)

Muscovite-rich mica schist (Mica schist, chiefly muscovite [KAl₂(AlSi₃O₁₀)(OH)₂], possibly with quartz and feldspar) — metamorphic

Muscovite-rich mica schist

Mica schist, chiefly muscovite [KAl₂(AlSi₃O₁₀)(OH)₂], possibly with quartz and feldspar

Basalt with Quartz Vein (Extrusive Igneous Rock with Hydrothermal Vein) — igneous

Basalt with Quartz Vein

Extrusive Igneous Rock with Hydrothermal Vein

Epidote (Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))) — mineral

Epidote

Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))

Likely biotite-rich mica schist (Mica schist, chiefly biotite (K(Mg,Fe)₃AlSi₃O₁₀(OH,F)₂), with possible quartz and feldspar) — metamorphic

Likely biotite-rich mica schist

Mica schist, chiefly biotite (K(Mg,Fe)₃AlSi₃O₁₀(OH,F)₂), with possible quartz and feldspar

Mystic Topaz (Treated Quartz or Topaz) (Silicate Mineral (SiO2 or Al2SiO4(F,OH)2) with Titanium coating) — gemstone

Mystic Topaz (Treated Quartz or Topaz)

Silicate Mineral (SiO2 or Al2SiO4(F,OH)2) with Titanium coating

K2 Jasper (K2 Granite) (Azurite in Granite (Biotite Granite containing Azurite)) — igneous

K2 Jasper (K2 Granite)

Azurite in Granite (Biotite Granite containing Azurite)

K2 Jasper (K2 Granite) (Azurite in Granite (Al2Cu3(CO3)2(OH)2 in NaAlSi3O8)) — igneous

K2 Jasper (K2 Granite)

Azurite in Granite (Al2Cu3(CO3)2(OH)2 in NaAlSi3O8)

Gravel (Unconsolidated rock fragments / detrital sediment) — sedimentary

Gravel

Unconsolidated rock fragments / detrital sediment

Druzy Quartz on Chert/Chalcedony (Silicon Dioxide (SiO2)) — mineral

Druzy Quartz on Chert/Chalcedony

Silicon Dioxide (SiO2)

Granite (Felsic Intrusive Igneous Rock) — igneous

Granite

Felsic Intrusive Igneous Rock

Agate (Agate (a cryptocrystalline variety of Quartz, SiO₂)) — Mineral

Agate

Agate (a cryptocrystalline variety of Quartz, SiO₂)

Dyed Quartz Geode (Silicon Dioxide (SiO2) with artificial pigment) — mineral

Dyed Quartz Geode

Silicon Dioxide (SiO2) with artificial pigment

Sandstone Pebble (Sandstone (Quartzose/Feldspathic Sandstone)) — sedimentary

Sandstone Pebble

Sandstone (Quartzose/Feldspathic Sandstone)

Unidentified small white mineral fragment, possibly quartz (Unconfirmed; quartz (SiO₂) is a plausible visual match) — mineral

Unidentified small white mineral fragment, possibly quartz

Unconfirmed; quartz (SiO₂) is a plausible visual match

Likely biotite mica in a host rock (Biotite, a dark mica-group mineral; composition varies, broadly K(Mg,Fe)₃AlSi₃O₁₀(F,OH)₂) — mineral

Likely biotite mica in a host rock

Biotite, a dark mica-group mineral; composition varies, broadly K(Mg,Fe)₃AlSi₃O₁₀(F,OH)₂

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Mica Schist (Mica Schist (primarily Muscovite and Biotite)) — metamorphic

Mica Schist

Mica Schist (primarily Muscovite and Biotite)

Sparkling Druzy Quartz on Matrix (Silicon Dioxide (SiO2) with iron oxide inclusions) — mineral

Sparkling Druzy Quartz on Matrix

Silicon Dioxide (SiO2) with iron oxide inclusions

Dalmatian Stone (Dalmatian Jasper) (Peralkaline Quartz-Feldspar Rock with Arfvedsonite) — igneous

Dalmatian Stone (Dalmatian Jasper)

Peralkaline Quartz-Feldspar Rock with Arfvedsonite

Chrysocolla in Jasper (Chryso-Jasper) (Cu2-xAlx(H2-xSi2O5)(OH)4·n H2O (Chrysocolla) + SiO2 (Jasper)) — mineral

Chrysocolla in Jasper (Chryso-Jasper)

Cu2-xAlx(H2-xSi2O5)(OH)4·n H2O (Chrysocolla) + SiO2 (Jasper)

Yellow Topaz (Imperial or Precious Topaz) (Al2SiO4(F,OH)2 (Aluminum Silicate Fluoride Hydroxide)) — mineral

Yellow Topaz (Imperial or Precious Topaz)

Al2SiO4(F,OH)2 (Aluminum Silicate Fluoride Hydroxide)

Epidote (Epidote (Ca2(Al,Fe)3(SiO4)3(OH))) — mineral

Epidote

Epidote (Ca2(Al,Fe)3(SiO4)3(OH))

Diamond (Carbon (C)) — mineral

Diamond

Carbon (C)

Yellow Topaz (Aluminum silicate fluoride hydroxide, Al2SiO4(F,OH)2) — mineral

Yellow Topaz

Aluminum silicate fluoride hydroxide, Al2SiO4(F,OH)2

Wishing Stone (Basalt/Greywacke with Quartz Vein) (Basalt or Siltstone with SiO2 (Quartz) hydrothermal intrusion) — igneous/sedimentary

Wishing Stone (Basalt/Greywacke with Quartz Vein)

Basalt or Siltstone with SiO2 (Quartz) hydrothermal intrusion

igneous/sedimentary

Crackled Quartz (Dyed) (Silicon Dioxide (SiO2)) — mineral

Crackled Quartz (Dyed)

Silicon Dioxide (SiO2)

Muscovite Mica (Muscovite (KAl2(AlSi3O10)(OH)2)) — mineral

Muscovite Mica

Muscovite (KAl2(AlSi3O10)(OH)2)

Banded Gneiss (Gneiss (pronounced 'nice')) — metamorphic

Banded Gneiss

Gneiss (pronounced 'nice')

Heat-Treated Citrine (Amethyst) (Silicon Dioxide (SiO2) with iron impurities) — mineral

Heat-Treated Citrine (Amethyst)

Silicon Dioxide (SiO2) with iron impurities

Likely rough blue-green beryl (aquamarine) (Beryl, Be₃Al₂Si₆O₁₈; blue-green color is caused mainly by iron) — gemstone

Likely rough blue-green beryl (aquamarine)

Beryl, Be₃Al₂Si₆O₁₈; blue-green color is caused mainly by iron

Granite Pebble (Intrusive Igneous Rock) — igneous

Granite Pebble

Intrusive Igneous Rock

Granite Gravel and Pebbles (Phaneritic Igneous Rock Aggregate) — igneous

Granite Gravel and Pebbles

Phaneritic Igneous Rock Aggregate

Schist (Mica Schist) — metamorphic

Schist

Mica Schist