Jasper and Greenstone Pebble
Siliceous rock / Metamorphic pebble
metamorphic
Category
Igneous, Metamorphic, And Sedimentary (Mixed Assemblage)
Browse igneous, metamorphic, and sedimentary (mixed assemblage) specimens identified by the Rock Identifier community.
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Jasper containing Agate (Jaspagate)
Silicon Dioxide (SiO2)
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Conglomerate (possibly concrete-like natural breccia)
Lithified, poorly sorted clastic rock with angular to subrounded mineral and rock fragments in a finer matrix
sedimentary
Mookaite Jasper
Silicified Radiolarite (SiO2)
sedimentary
Gravel or Pebble
Clastic Sedimentary Grain (typically composed of Quartz or Silicate minerals)
sedimentary
Serpentine (likely polished/tumbled)
Serpentinite; chiefly antigorite, lizardite, and/or chrysotile Mg₃Si₂O₅(OH)₄
metamorphic
Purple Lepidolite with Quartz
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Weathered granitic rock
Granite (quartz–feldspar–mica intrusive rock; exact variety uncertain)
igneous
Pink Granite
Phaneritic Felsic Igneous Rock (Rich in K-Feldspar)
igneous
Mixed sandstone and iron-rich sedimentary rock fragments
Quartz arenite/subarkose, with ferruginous cement and possible iron-oxide staining
sedimentary
Granite Pebble
Intrusive Igneous Rock (Granite)
igneous
Greenstone / Diorite
Intermediate plutonic igneous rock
igneous
Weathered quartz-bearing rock fragment
Indeterminate; likely quartz-rich granite, gneiss, or pegmatitic rock
igneous
Quartz-rich rock, likely milky quartz vein material
Quartz (SiO₂), possibly with feldspar and mica; exact identification is uncertain from the image
metamorphic
Concrete rubble
Anthropogenic conglomerate
sedimentary
Diorite
Diorite (plutonic igneous rock)
igneous
Quartz Sand Grain
Silicon dioxide (SiO2)
mineral
Large weathered granite boulder
Granite, typically quartz–alkali feldspar–plagioclase–biotite assemblage
igneous
Uncertain coarse-grained igneous fragment
Likely granite or granitic pegmatite; quartz–feldspar–mica assemblage
igneous
Biotite-bearing granite or granitic gneiss
Quartz–feldspar–biotite assemblage; possibly metamorphosed granite (gneiss)
igneous
Mixed beach gravel and sand
Unsorted siliciclastic sediment, chiefly quartz and rock fragments
sedimentary
Schist
Schist (various compositions)
metamorphic
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
White Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Granite (Pink/Potassium Feldspar rich)
Granite (K-feldspar rich intrusive igneous rock)
igneous
Mixed river gravel (likely alluvial sediment)
Unconsolidated polymictic gravel; rock fragments of varied composition
sedimentary