Concrete with Aggregate
Composite construction material; primary matrix is Calcium Silicate Hydrate (C-S-H)
anthropogenic (human-made) sedimentary-like material
Category
Mineral Based Alloy (Anthropogenic)
Browse mineral based alloy (anthropogenic) specimens identified by the Rock Identifier community.
Slag Glass
Amorphous Silica / Glass Slag
industrial byproduct (anthropogenic rock-like material)
Granite
Granite (a common name for a felsic intrusive igneous rock)
Igneous Rock
Basalt
Basalt (Igneous Volcanic Rock)
igneous
Stiped Slate Beach Pebble
Low-grade Metamorphic Slate with Quartz Vein (SiO2 on Phyllosilicate base)
metamorphic
Green Apophyllite and Stilbite on Quartz Cluster
Apophyllite-(K) (KCa4(Si8O20)(F,OH)·8H2O), Stilbite-Ca (NaCa4(Si27Al9)O72·28H2O), Quartz (SiO2)
Mineral
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
Mineral
Jasper (likely Kambaba or Crocodile Jasper variety)
Silicon Dioxide (SiO2) with inclusions
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
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
Coquina or Fossiliferous Limestone
Fossiliferous Calcarenite (CaCO3)
sedimentary
Basalt
Mafic Volcanic Rock (composed of plagioclase, pyroxene, and olivine)
Igneous
Granite
Felsic Plutonic Rock (Granite)
igneous
Granite
Granite (Felsic intrusive igneous rock)
igneous
Coquina or Fossiliferous Limestone
Fossiliferous Calcarenite (CaCO3)
sedimentary
Granite
Granite (composed primarily of Quartz, Alkali Feldspar, and Plagioclase)
igneous
Granite
Granite (Mainly Quartz, Alkali Feldspar, and Plagioclase)
igneous
Granite
Phaneritic Igneous Rock (Granitic)
igneous
Basalt (River Pebble)
Extrusive mafic igneous rock
igneous
Basalt
Extrusive mafic igneous rock
igneous
River Cobble (likely Basalt)
Mafic Igneous Rock (Aphanitic)
Igneous
Granite
Granite (Mainly Quartz, Feldspar, and Mica)
igneous
Sandstone (with Manganese staining)
Arenite (composed primarily of SiO2)
sedimentary
Pink Granite
Phaneritic Plutonic Felsic Rock (rich in Potassium Feldspar)
igneous
Chert (Field Stone/Pebble)
Microcrystalline or cryptocrystalline Quartz (SiO2)
sedimentary
Granite
Granite (Felsic Plutonic Rock)
igneous
Pink Granite
Phaneritic Felsic Intrusive Igneous Rock
igneous
Gabbro (Water-Worn Cobble)
Gabbro
igneous
River Rock (Quartzite)
Quartzite (SiO2)
metamorphic
Basalt
Basalt
igneous
Basalt
Basalt (Mafic volcanic rock)
Igneous
Moss Agate
SiO2 (Silicon Dioxide) with dendritic inclusions
Mineral
Precious Opal
Hydrated Silica (SiO2·nH2O)
mineraloid
Coquina
Biogenic Limestone (Calcite, CaCO3)
sedimentary
Bloodstone (Heliotrope)
Silicon Dioxide (SiO2) with Iron Oxide inclusions
sedimentary
Fuchsite in Quartz
K(Al,Cr)2(AlSi3O10)(OH)2 (Muscovite with Chromium)
metamorphic
Jasper in Quartzite (likely Cinnabar or Iron inclusions)
Silicon dioxide (SiO2) with impurities
metamorphic
Muscovite Schist with Quartz
KAl2(AlSi3O10)(OH)2 in Schistose matrix
metamorphic
Peridotite
Ultramafic intrusive rock (Peridotite)
Igneous
Basalt Beach Pebble
Basalt (Aphanitic Mafic Volcanic Rock)
igneous
Basalt
Extrusive mafic igneous rock
igneous
Granodiorite (Gneissic texture)
Granodiorite (containing Quartz SiO2, Plagioclase Feldspar, and Biotite)
igneous