Schist
Mica Schist
metamorphic
Category
Mineral, Possibly Rock Fragment Containing A Mineral
Browse mineral, possibly rock fragment containing a mineral specimens identified by the Rock Identifier community.
Learn about Mineral, Possibly Rock Fragment Containing A Mineral in the encyclopedia
View all →
Basalt
Extrusive Igneous Rock
igneous
Pegmatite
Coarse-grained Igneous Rock (Granitic Pegmatite)
igneous
Granodiorite
Granodiorite
igneous
Sandstone
Arenite
sedimentary
Coarse Sand Grain / Lithic Fragment
Clastic Sediment (Lithic fragment or Quartz/Feldspar grain)
sedimentary
Oolitic Chert
Silicon Dioxide (SiO2) with Oolitic texture
sedimentary
Milky Quartz with Mineral Inclusions
Quartz (Silicon Dioxide, SiO2)
mineral
Sandstone (with Iron Oxide)
Arenite with Limonite/Hematite staining
sedimentary
Sandstone (Ferruginous)
Arenite with Iron Oxides
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Granodiorite
Granodiorite (phaneritic intrusive igneous rock)
igneous
Conglomerate (Puddingstone)
Conglomerate (specifically, clastic sedimentary rock)
Sedimentary
Amygdaloidal Basalt
Vesicular-Amygdaloidal Basalt (Mafic Extrusive)
igneous
Turquoise
Hydrated phosphate of copper and aluminum, CuAl6(PO4)4(OH)8·4H2O
mineral
Granite (Gneissic / Weathered Pebble)
Felsic intrusive igneous rock (Granite)
igneous
Sandstone (Quartzite-rich Cobble)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Generic Pebble / Rock Fragment
Lithic fragment / Weathered rock pebble
sedimentary
Gravel
Unconsolidated rock fragments / detrital sediment
sedimentary
Amygdaloidal Basalt
Basalt with secondary mineral infilling (commonly Zeolite, Calcite, or Quartz)
igneous
Sandstone (likely Graywacke or Lithic Sandstone)
Arenite / Wacke (SiO2 based with lithic fragments)
sedimentary
Granodiorite
Granodiorite
igneous
Granite
Intrusive Igneous Rock
igneous
Fossiliferous Limestone with Crinoid Stem fragment
Calcite (CaCO3) containing Crinoidea fossils
sedimentary
Pegmatite (Granite Pegmatite)
Intrusive Igneous Rock (Granite Pegmatite)
igneous
Biotite (Black Mica)
Biotite - K(Mg,Fe)3(AlSi3O10)(OH)2
mineral
Sandstone (Greywacke/Siltstone variant)
Clastic Sedimentary Rock (Lithic Wacke)
sedimentary
Granite Gravel (Pebble)
Intrusive Felsic Igneous Rock
igneous
Green Aventurine
Silicon Dioxide (SiO2) with inclusions
metamorphic
Shale
Shale (Argillaceous sedimentary rock)
sedimentary
Porphyritic Basalt with K-Feldspar Phenocryst
Porphyritic Basic Igneous Rock (with Potassium Feldspar)
igneous
Calcite (or Alabaster, if truly carved)
Calcium Carbonate (CaCO3)
Mineral/Rock
Banded Gneiss with Quartz Vein
Gneiss containing SiO2 (Quartz) intrusion
metamorphic
Quartz / Quartzite
Silicon Dioxide (SiO2)
mineral
Boxwork Siderite or Sepatarian Nodule Weathering
Siderite (FeCO3) with secondary mineralization or Boxwork Geode fragment
sedimentary
Seashell Fragment
Calcium Carbonate (CaCO3) in the form of Aragonite or Calcite
mineral
Conglomeratic Sandstone
Clastic Sedimentary Rock
sedimentary
Conglomeratic breccia
Clast-supported polymictic conglomerate/breccia, cemented by silica- or carbonate-rich matrix
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Chert (containing a small fossil)
Microcrystalline Quartz (SiO2)
sedimentary
Gravel and Sediment Sample
Mixed clastic sediment
sedimentary
Amygdaloidal Basalt
Amygdaloidal Basalt
igneous