K2 Azurite Granite / K2 Stone
Granite (igneous rock) with Azurite inclusions (mineral)
igneous
Category
Mineral Based Alloy (Anthropogenic)
Browse mineral based alloy (anthropogenic) specimens identified by the Rock Identifier community.
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Granite
Granite (Mainly Quartz SiO2, Feldspar KAlSi3O8, and Mica KAl2(AlSi3O10)(OH)2)
Igneous
Green Apophyllite and Stilbite on Quartz Cluster
Apophyllite-(K) (KCa4(Si8O20)(F,OH)·8H2O), Stilbite-Ca (NaCa4(Si27Al9)O72·28H2O), Quartz (SiO2)
Mineral
Zoisite with Hornblende
Zoisite (Ca2Al3(SiO4)3(OH)) with Amphibole inclusions
metamorphic
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
Mineral
Granite
Granite (a common name for a felsic intrusive igneous rock)
Igneous Rock
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
Basalt
Extrusive Mafic Igneous Rock (composed primarily of plagioclase feldspar and pyroxene)
igneous
Porphyritic Rhyolite
Porphyritic Rhyolite (compositionally similar to granite)
igneous
Porphyritic Andesite
Andesite (porphyritic variety)
igneous
Dendritic Agate (or Dendritic Opal)
SiO2 (for Agate), SiO2·nH2O (for Opal)
Mineral
Drill Core Sample
Cylindrical Rock Core (Specific mineralogy varies by extraction site)
Metamorphic (Likely Gneiss or Schist based on texture)
Basalt
Basalt (Igneous Volcanic Rock)
igneous
Granite
Phaneritic Felsic Igneous Rock
igneous
Porphyry
Porphyritic Andesite/Basalt
igneous
Ferrous Slag
Iron/Steel Slag (Complex Calcium-Alumino-Silicates)
Anthropgenic (Industrial Byproduct)
Basalt
Basalt (Mafic volcanic rock)
igneous
Red Granite
Phaneritic Felsic Intrusive Igneous Rock (primarily K-feldspar, Quartz, and Biotite)
igneous
Chert (Arrowhead/Projectile Point)
Microcrystalline Quartz (SiO2)
sedimentary
Snowflake Obsidian
Spherulitic Volcanic Glass (primarily SiO2)
igneous
Dragon Blood Jasper
Epidote with Red Piedmontite (Chalcedony/Quartz variant)
sedimentary
Pink Granite
Phaneritic Plutonic Igneous Rock (composed of K-feldspar, Quartz, and Mica)
igneous
Painted River Rock
Polished fluvial clast with acrylic/synthetic pigment coating
Sedimentary or Metamorphic (base substrate)
Stiped Slate Beach Pebble
Low-grade Metamorphic Slate with Quartz Vein (SiO2 on Phyllosilicate base)
metamorphic
Coquina
Bioclastic Limestone
sedimentary
Coquina
Biogenic Limestone (Calcite/Aragonite)
sedimentary
Jade
There are two distinct minerals classified as Jade: Jadeite (Na(Al,Fe3+)Si2O6) and Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2). Based on the image showing translucent, somewhat fibrous material, it is likely Nephrite.
Mineral
Slate
Foliated Metamorphic Rock (Mainly composed of Quartz, Illite, Chlorite)
metamorphic
Basalt
Mafic volcanic rock (primarily Pyroxene and Plagioclase feldspar)
igneous
Granite with Quartz inclusion
Granite (Mainly SiO2, KAlSi3O8, NaAlSi3O8)
igneous
Granite
Granite (Phaneritic Acidic Igneous Rock)
igneous
Limestone
Calcareous sedimentary rock (primarily Calcium Carbonate, CaCO3)
sedimentary
Basalt
Extrusive mafic igneous rock
igneous
Granodiorite
Phaneritic Granodiorite
igneous
Basalt
Basalt (Mafic volcanic rock)
igneous
Polygenetic Conglomerate (or Breccia)
Clastic Sedimentary Rock
sedimentary
Basalt (Weathered)
Basalt
igneous
Basalt
Basalt (Mafic volcanic rock)
igneous
Basalt (Gravel Pebble)
Basalt (contains pyroxene, plagioclase feldspar, and olivine)
igneous
Vesicular Basalt
Basalt (Extrusive Igneous Rock)
igneous
Granite
Phaneritic plutonic rock (Quartz, Feldspar, Mica)
igneous
Granite Cobble
Granite (Felsic Intrusive)
igneous