Glaucophane Schist (Blueschist)
Glaucophane Schist
metamorphic
Category
Mineral Like Biological Tissue
Browse mineral like biological tissue specimens identified by the Rock Identifier community.
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Petrified Coral (Agatized Coral)
Fossilized Anthozoa (Silicon Dioxide replacement - SiO2)
fossil
Lepidolite
K(Li,Al)3(Si,Al)4O10(F,OH)2
mineral
Diorite
Phaneritic intermediate plutonic rock
igneous
Obsidian
Volcanic glass (SiO2 - Silicon Dioxide)
Igneous
Obsidian
Amorphous volcanic glass (SiO2)
igneous
Mica Schist
Mica Schist (Intermediate-grade Metamorphic Rock)
metamorphic
Echinoid Fossil / Fossilized Sea Urchin
Echinoidea
fossil
Green Aventurine
Quartz (Silicon Dioxide, SiO2) with fuchsite inclusions
mineral
Green Jasper (Banded Jasper)
Silicon Dioxide (SiO2) with impurities
sedimentary
Brecciated Red Jasper
Silicon Dioxide (SiO2) with Hematite impurities
sedimentary
Ferruginous Sandstone
Arenite with Iron-Oxide Cement
sedimentary
Garden Quartz (Lodalite)
Silicon Dioxide with various mineral inclusions (SiO2)
mineral
Halite (Rock Salt)
Halite (Sodium Chloride, NaCl)
mineral
Limonite (Iron Ore)
Hydrous ferric oxides (FeO(OH)·nH2O)
sedimentary
Epidote
Epidote (Ca2(Al, Fe)3(SiO4)3(OH))
mineral
Copper Ore (Malachite, Azurite, and Chalcopyrite in Host Rock)
Copper-bearing polymetallic mineral aggregate (Cu-minerals)
mineral
Tree Agate
Dendritic Agate (Silicon Dioxide, SiO2)
Mineral
Banded Gneiss
Gneiss (Metamorphic rock)
metamorphic
Potassium Feldspar
Orthoclase (KAlSi3O8)
mineral
Quartz Geode
Crystalline Silicon Dioxide (SiO2) within a geode structure
mineral
Sandstone
Sandstone (SiO2 dominated)
sedimentary
Fossilized Shark Tooth
Elasmobranchii (fossilized matrix/root section)
fossil
Blue Apatite
Fluorapatite / Apatite group (Ca5(PO4)3(F,Cl,OH))
mineral
Green Quartz (Prasiolite/Adventurine/Jasper)
Silicon Dioxide (SiO2)
mineral
Almandine Garnet
Almandine (Fe3Al2(SiO4)3)
mineral
Muscovite (Mica)
Muscovite - KAl2(AlSi3O10)(OH)2
mineral
Black Tourmaline
Schorl (Sodium Iron Aluminum Borosilicate Hydroxide)
mineral
Garnet (specifically Almandine or Pyrope)
Almandine: Fe3Al2(SiO4)3 or Pyrope: Mg3Al2(SiO4)3
mineral
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
mineral
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Copper Ore (with Malachite and Azurite)
Hydroxide copper carbonate (Cu2CO3(OH)2 / Cu3(CO3)2(OH)2)
mineral
Blue Sapphire
Corundum (Al2O3 with trace Titanium and Iron)
mineral
Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral
Greenschist (Chlorite Schist)
Greenschist (containing Chlorite, Actinolite, and Epidote)
metamorphic
Petrified Wood
Silicified Wood (primarily SiO2)
mineral
Greenstone
Metabasalt / Greenschist facies rock
metamorphic
Amethyst (Raw Quartz)
Silicon Dioxide (SiO2) with iron impurities
mineral
Amygdaloidal Basalt with Epidote/Chlorite
Basalt (containing (Ca2(Al2Fe3+)(SiO4)(Si2O7)O(OH)))
igneous
Diorite
Diorite
igneous
Limonite / Ironstone Nodule
Limonite (Hydrated iron(III) oxide-hydroxide), FeO(OH)·nH2O
mineral