Calcite (Yellow/Orange variety - sometimes called Honey Calcite)
Calcite
Mineral
Category
Sedimentary Rock (Possibly Composed Of Various Minerals)
Browse sedimentary rock (possibly composed of various minerals) specimens identified by the Rock Identifier community.
Learn about Sedimentary Rock (Possibly Composed Of Various Minerals) in the encyclopedia
View all →
Quartz
Silicon Dioxide (SiO2)
mineral
Sandstone or Limestone
Arenite or Calcareous Sedimentary Rock
Sedimentary
Granite
Granite (Phaneritic Igneous Rock)
igneous
Granite with Pyrite or Mica
Phaneritic intrusive igneous rock
igneous
Likely weathered iron-rich stone
Uncertain; possibly limonite/goethite-bearing rock
mineral
Sandstone
Arenite
sedimentary
Fancy Jasper
Silicon Dioxide (SiO2) with impurities
sedimentary
Banded Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Red Sandstone
Arenite (primarily composed of SiO2 with Fe2O3 cement)
sedimentary
Pegmatitic granite, possibly potassium-feldspar-rich
Coarse-grained granite; mainly quartz (SiO₂), potassium feldspar (KAlSi₃O₈), plagioclase, and biotite/hornblende
igneous
Granite Pebble
Granite (Phaneritic Quartz-Feldspar Rock)
igneous
Sandstone pebble
Sandstone (SiO2 with iron oxides)
sedimentary
River Gravel
Polymictic Gravel / Detrital Rock Aggregate
sedimentary
Sandstone
Arenite
sedimentary
Sandstone (Quartz-rich)
Arenite
sedimentary
Likely weathered iron-rich rock
Probable basalt or limonite/goethite-stained mafic rock; exact identification requires testing
igneous
Quartz Vein Rock
Silicon Dioxide (SiO2)
mineral
Gneiss (specifically a Granitic Gneiss)
Gneiss (typically composed of Quartz, Feldspar, and Mica/Amphiboles)
metamorphic
Chert (Nodule)
Chert (composition: SiO2)
sedimentary
Sandstone
Arenite (SiO2 based typically)
sedimentary
Shale
Shale (fine-grained clastic sedimentary rock)
Sedimentary
Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Sandstone
Sandstone (SiO2-rich framework with variable matrix)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz (pebble)
Quartz (SiO₂)
Mineral
Chert (or possibly Flint)
SiO2 (Silicon Dioxide)
Sedimentary Rock
Quartz (possibly milky quartz)
Quartz (Silica; SiO₂)
Mineral
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 staining)
sedimentary
Granite
Phaneritic plutonic rock (composed of quartz, feldspar, and mica)
igneous
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone (Ferruginous/Banded)
Clastic Terrigenous Sandstone (SiO2 with Fe2O3 cement)
sedimentary
Bivalve Shell (Fossil or Contemporary)
Class Bivalvie (various genera and species of clams, cockles, etc.)
Sedimentary (Biogenic sediment or biological remain)
Sandstone
Arenite (major component SiO2)
sedimentary
Quartz (Iron-stained Quartz)
Silicon Dioxide (SiO2)
mineral
Clear Quartz (Faceted Crystal)
Silicon Dioxide (SiO2)
mineral
Sandstone Concretion
Sedimentary concretion
Sedimentary
River Siltstone / Mudstone Pebble
Siltstone (composed of mixed silicate and carbonate minerals)
sedimentary
Granite
Phaneritic Felsic Igneous Rock
igneous
Quartz-rich breccia or altered granite fragment
Polymineralic quartz–feldspar rock, likely hydrothermally altered granite/pegmatite
igneous
Shale or Slate with Quartz Veins
Shale (fine-grained clastic sedimentary rock) or Slate (low-grade metamorphic rock formed from shale) with Quartz (SiO2) veins
Metamorphic, likely Sedimentary with Quartz veins
Greenschist
Greenschist (composed of Chlorite, Actinolite, and Epidote)
metamorphic