Gneiss with Quartz Veining
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Category
Mixed (Igneous, Sedimentary, Metamorphic, And Minerals)
Browse mixed (igneous, sedimentary, metamorphic, and minerals) specimens identified by the Rock Identifier community.
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Blue Apatite
Calcium Phosphate (Ca5(PO4)3(F,Cl,OH))
mineral
Gneiss (Metamorphic Rock)
Gneiss
metamorphic
Granite
Granite; primarily quartz, alkali feldspar, plagioclase, and biotite/hornblende
igneous
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Quartz Druzy / Quartz Crystal Cluster
Silicon Dioxide (SiO2)
mineral
Granite / Gneiss (Felsic Metamorphic or Igneous Rock)
Gneiss (or weathered Granite)
metamorphic
Gneiss
Gneiss (Metamorphic high-grade)
metamorphic
Magnetite
Magnetite (Fe3O4)
mineral
Collection of Minerals and Ores
Various (e.g., Uraninite (U3O8), Carbon (C), Native Gold (Au), Hematite (Fe2O3), Galena (PbS), etc.)
mineral
Quartz (Tumbled)
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
Gneiss
Gneiss
metamorphic
Feldspar (specifically Orthoclase or Plagioclase)
Potassium Aluminum Silicate (KAlSi3O8) or Sodium/Calcium Aluminum Silicate
mineral
Gneiss (specifically Epidote-Quartz Gneiss)
Gneiss containing Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)) and Quartz (SiO2)
metamorphic
Quartz pebble / Quartzite
Silicon Dioxide (SiO2)
sedimentary
Quartz (Raw / Unpolished)
Silicon Dioxide (SiO2)
mineral
Chrysocolla on Matrix
Hydrated copper phyllosilicate (Cu,Al)2H2Si2O5(OH)4·nH2O
mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
River Pebbles (Mixed Suite)
Mixed lithologies: Quartzite and Gneiss
metamorphic
Pink Granite
Granite (Felsic Plutonic Rock)
igneous
Gneiss (Metamorphic Cobble)
Gneiss
metamorphic
Unidentified polished stone fragments
Indeterminate; likely mixed lapidary specimens, possibly jasper, agate, or quartz-bearing rock
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Granite Gneiss
Gneiss (containing quartz, alkali feldspar, plagioclase, biotite/amphibole)
metamorphic
Gneiss
Gneiss
metamorphic
Gneiss
Gneiss
metamorphic
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Gneiss (Granitic Gneiss)
Gneiss
metamorphic
Blue Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
SiO2 (Silicon dioxide)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz (Milky/Gray variety)
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Chrysocolla on Quartz
Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O) with Quartz (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral