Biotite Schist with Garnet
Garnet-Biotite Schist
metamorphic
Category
Mineral Side Rock
Browse mineral side rock specimens identified by the Rock Identifier community.
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Sandstone Geode (Unbroken)
Siliciclastic sedimentary rock (primarily Quartz)
sedimentary
Red Shale
Fissile Siliciclastic Sedimentary Rock
sedimentary
Sandstone (Quartzose Sandstone)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Basalt with Amygdules
Amygdaloidal Basalt
igneous
Granite
Felsic Intrusive Igneous Rock
igneous
Biotite Mica
Biotite (K(Mg,Fe)3AlSi3O10(OH,F)2)
mineral
Schist
Mica Schist
metamorphic
Pebble (Likely Basalt or Siltstone)
Clastic sedimentary rock or mafic volcanic rock
Igneous or Sedimentary
Sandstone
Arenite (SiO2 principal component)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Quartz (Milky Quartz / Quartzite)
Silicon Dioxide (SiO2)
mineral
Concretionary Sandstone
Clastic Sedimentary Rock (Sandstone with secondary mineral cementation)
sedimentary
Sandstone (Ferruginous)
Clastic Sedimentary Rock (Litharenite)
sedimentary
Sandstone with Foliose Lichen
Arenite (Rock matrix) with Xanthoparmelia or Flavoparmelia (Lichen genus)
sedimentary
Amygdaloidal Basalt with Epidote
Vesicular Basalt with secondary Epidote/Quartz mineral infill
igneous
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Unakite
Unakite (Metasomatized Granite)
metamorphic
Ocean Jasper
Orbicular Jasper / Silicate
Mineral
Quartz-Veined Mudstone
Argillite or Mudstone with Quartz Veining (SiO2 in Siliciclastic Matrix)
sedimentary
Greenstone
Greenschist (Greened Metabasalt)
metamorphic
Shale with Pyrite
Clastic sedimentary rock containing Iron Disulfide (FeS2)
sedimentary
Quartz (Water-worn pebble)
Silicon Dioxide (SiO2)
mineral
Biotite Mica
Biotite (K(Mg,Fe)3AlSi3O10(F,OH)2)
mineral
Basalt with Quartz Infill
Basalt (Mafic Extrusive Volcanic Rock)
igneous
Shale
Shale (Lutite)
sedimentary
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Almandine Garnet in Schist
Almandine, Fe3Al2(SiO4)3
metamorphic
Sandstone (Ferruginous)
Arenite (primarily SiO2 with iron oxide cement)
sedimentary
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 cementation)
sedimentary
Sandstone (Quartzose Sandstone)
Arenite (primarily SiO2)
sedimentary
Banded Agate (specifically Carnelian Agate)
Silicon Dioxide (SiO2)
mineral
Agate
Silicon dioxide (SiO2)
mineral
Agate
Silicon Dioxide (SiO2) - variety: Chalcedony
mineral
Geode (unopened)
SiO2 - Chert-shelled concretion (mostly Quartz)
sedimentary
Orbicular Jasper
Silicon Dioxide (SiO2)
sedimentary
Sandstone (Ferruginous)
Arenite (primarily SiO2 with iron oxide cement)
sedimentary
Sandstone (specifically Arkose or Siltstone variant)
Clastic Sedimentary Rock (primarily SiO2)
sedimentary
Howlite and Purple Amethyst Druzy
Calcium Borosilicate Hydroxide (Howlite) and Silicon Dioxide (Quartz/Amethyst)
mineral
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Jasper with Quartz Veining
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Banded Gneiss with Quartz Vein
Foliated Metamorphic Rock (Gneiss)
metamorphic