Sandstone (Ferruginous)
Clastic Sedimentary Rock (Litharenite)
sedimentary
Category
Mineral In A Matrix (Likely Quartz Or Feldspar)
Browse mineral in a matrix (likely quartz or feldspar) specimens identified by the Rock Identifier community.
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite
mineral
Amygdaloidal Basalt
Vesicular Basalt with secondary mineral infilling (commonly Zeolites, Calcite, or Quartz)
igneous
Sandstone
Arenite
sedimentary
Green Aventurine
Silicon Dioxide (SiO2 with Fuchsite inclusions)
metamorphic
Larvikite
Monzonite (intermediate intrusive igneous rock containing plagioclase, alkali feldspar, augite, and biotite)
igneous
Granite
Granite
igneous
Quartz (Milky or Iron-Stained)
Silicon Dioxide (SiO2)
mineral
Granite
Intrusive Felsic Igneous Rock
igneous
Granite
Phaneritic Igneous Rock (Granite)
igneous
Milky Quartz with Iron Staining
Quartz (Silicon Dioxide, SiO2)
mineral
Basalt with Secondary Mineral Inclusions
Amygdaloidal Basalt (Mafic volcanic rock, primarily Augite and Plagioclase)
igneous
Sandstone (Quartz-rich)
Arenite (SiO2 based)
sedimentary
Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Fossiliferous Limestone (Coquina / Shell Limestone)
Biogenic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Gneiss
Gneiss
metamorphic
Amygdaloidal Basalt
Amygdaloidal Basalt (Mafic extrusive volcanic rock with secondary mineral infilling)
igneous
Ocean Jasper
Orbicular Jasper (Silicon Dioxide with impurities), SiO2
mineral
Granite Gneiss
Gneiss (high-grade metamorphic rock)
metamorphic
Quartz (Rock Crystal)
Quartz (SiO₂ - Silicon Dioxide)
Mineral
Gneiss
High-grade metamorphic rock (Gneiss)
metamorphic
Milky Quartz with Chlorite/Epidote inclusions
Silicon Dioxide (SiO2) with phyllosilicate/sorosilicate inclusions
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Beryl (likely var. Aquamarine or Goshenite) in Matrix
Beryllium Aluminum Silicate (Be3Al2Si6O18)
mineral
Quartz
Silicon dioxide (SiO₂)
Mineral
Granite
Granite (Felsic intrusive igneous rock)
igneous
Quartz Druzy on Matrix (with Copper Mineralization)
Silicon Dioxide (SiO2) with Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4·n H2O)
mineral
Granitic Pegmatite
Granite (with coarse-grained Quartz, Feldspar, and Mica components)
igneous
Sandstone
Arenite (primarily SiO2)
sedimentary
Granite (Thin Section)
Granite (Felsic Plutonic Rock)
igneous
Quartz with Mica inclusions (Pegmatite)
Silicon Dioxide (SiO2) with Muscovite/Biotite inclusions
igneous
Gold Ore in Quartz
Native Gold (Au) in Quartz (SiO2)
mineral
Dumortierite Quartz
Al7BO3(SiO4)3O3 (Borosilicate mineral/Quartz inclusion)
mineral
Quartz Vein in Host Rock
Silicon Dioxide (SiO2) within Metasedimentary or Igneous matrix
mineral
Red Jasper (Amygdaloidal Basalt with Agate)
Silicon dioxide (SiO2) in Basalt host
igneous
Milky Quartz in Matrix
Silicon Dioxide (SiO2)
mineral
Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Milky Quartz with Mineral Inclusions
Quartz (Silicon Dioxide, SiO2)
mineral
Rutilated Quartz
Quartz (SiO2) with Rutile (TiO2) inclusions
Mineral
Dalmatian Stone
Dalmatian Jasper (a misnomer for an Aplite with Arfvedsonite spots)
igneous