Quartzite Pebble
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Category
Metamorphic Rock (Formed From A Fibrous Crocidolite Asbestos)
Browse metamorphic rock (formed from a fibrous crocidolite asbestos) specimens identified by the Rock Identifier community.
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Muscovite on Quartz (Mica host rock)
KAl2(AlSi3O10)(OH)2 (Muscovite) in SiO2 (Quartz)
igneous/metamorphic
Anthracite Coal
Anthracite (Carbon-based metamorphic rock)
metamorphic
Unakite
Unakite (Metasomatized Granite)
metamorphic
Slate
Phyllo-silicate based metamorphic rock
metamorphic
Amazonite
KAlSi3O8 (Potassium Aluminum Silicate) - a variety of Microcline Feldspar
mineral
Quartzite
Quartzite (SiO2-rich metamorphic rock)
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Rhodonite, Gray Moonstone, and White Feldspar Mix
Multiple: MnSiO3 (Rhodonite), (K,Na)AlSi3O8 (Feldspar/Moonstone)
mineral
Arsenopyrite in Quartz/Host Rock
Arsenopyrite (FeAsS)
mineral
Quartzite (Yellow/Tan)
Metamorphic Rock composed of Quartz (SiO₂)
metamorphic
Yellow Quartzite
Quartzite (primarily SiO2)
metamorphic
Clay Brick
Ceramic structural unit (Al2O3·2SiO2·2H2O as precursor)
metamorphic (man-made/anthropogenic)
Gneiss (Banded Gneiss)
Gneiss
metamorphic
Quartzite Pebble
Quartzite (SiO2)
metamorphic
Anthracite Coal
Low-grade metamorphic carbonaceous rock
metamorphic
Lapis Lazuli
Lapis Lazuli (a rock type, not a single mineral, composed primarily of lazurite, calcite, and pyrite)
Mineral, part of a rock
Yellow Quartzite (Iron-Stained Quartzite)
Quartzite (SiO2 with Fe2O3 trace impurities)
metamorphic
Anthracite Coal
Anthracite (Carbon-rich metamorphic rock)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Blue Sapphire
Corundum (Al2O3)
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Pebble (likely Quartzite or Chert)
Clastic Sediment, potentially composed of SiO₂ (Quartz)
Mineral, Sediment
Mica Group Minerals
There isn't a single scientific name as 'Mica' refers to a group of phyllosilicate minerals. Common scientific names include Muscovite (KAl₂ (AlSi₃O₁₀)(OH)₂), Biotite (K(Mg,Fe)₃AlSi₃O₁₀(OH)₂), Phlogopite (KMg₃AlSi₃O₁₀(OH)₂), and Lepidolite (K(Li,Al)₃(Al,Si,Rb)₄O₁₀(F,OH)₂).
Mineral
Magnetite (Small Granule)
Magnetite (Fe3O4)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Rhodonite in Matrix
Rhodonite (Manganese Silicate) - (Mn2+,Fe2+,Mg,Ca)SiO3
mineral
Prehnite
Prehnite, Ca2Al2Si3O10(OH)2
Mineral
Milky Quartz (Crystal Cluster)
Silicon Dioxide (SiO2) - Quartz Variety
mineral
Granitic Gneiss
Gneiss (containing Potassium Feldspar and Quartz)
metamorphic
Petrified Wood
Silicified Wood (SiO2)
metamorphic
Unakite
Epidotized Granite
metamorphic
Red Quartzite (Tumbled Pebble)
Quartzite (primarily SiO2 with hematite inclusions)
metamorphic
Veined Pebble (likely a Quartz-Veined Pebble)
Pebble with Mineral Vein (e.g., Quartz Vein in a Chert/Mudstone Pebble)
Sedimentary Rock (possibly conglomerate or breccia with a quartz vein)
Quartzite Pebble (River Rock)
Quartzite (primarily SiO2)
metamorphic
Quartzite Pebble (with Iron Inclusions)
Quartzite (primarily SiO2 with Fe2O3/FeOOH impurities)
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Muscovite Mica
Muscovite (Potassium Mica) KAl2(AlSi3O10)(OH)2
Mineral
Yellow Quartzite
Quartzite (primarily Silicon Dioxide - SiO2)
metamorphic
Yellow Quartz (Citrine/Yellow Jasper mix)
Silicon Dioxide (SiO2)
mineral