Metamorphic Rock (Specifically A Rock Composed Of Minerals)

Lapis Lazuli

Lazurite-rich metamorphic rock

Serpentinite

Serpentinite (composed primarily of minerals in the Serpentine group)

Green Calcite

Calcium Carbonate (CaCO3)

Basalt

Basalt

Likely amphibolite

Amphibolite, composed mainly of hornblende (amphibole) and plagioclase feldspar

Weathered vesicular basalt (likely amygdaloidal basalt)

Basalt, composed mainly of plagioclase feldspar, pyroxene, and altered olivine; cavities may contain secondary zeolite, calcite, or silica

Likely banded gneiss fragment

Gneiss, a foliated metamorphic rock (exact mineral identification is uncertain from the image)

Clear Quartz Crystal

Quartz (Silicon Dioxide - SiO2)

Conglomerate

Conglomerate (clastic sedimentary rock)

Likely greenstone (metamorphosed basalt)

Metabasalt; commonly composed of chlorite, actinolite, epidote, and albite

Gneiss

Gneiss (Foliated Metamorphic Rock)

Likely amphibolite (hornblende-rich metamorphic rock)

Amphibolite, composed chiefly of amphibole (commonly hornblende) and plagioclase feldspar

Greenschist

Greenschist facies metamorphic rock

Chalcedony (Common Agate)

Cryptocrystalline Quartz (SiO2)

Likely amphibolite (dark hornblende-rich rock)

Amphibolite, typically composed mainly of hornblende and plagioclase feldspar

Lapis Lazuli

Lapis Lazuli (Na,Ca)8(AlSiO4)6(S,SO4,Cl)1-2

Banded sandstone pebble

Quartz-rich lithic sandstone; exact provenance and composition require testing

Banded gneiss pebble

Gneiss, composed chiefly of quartz, feldspar, and mica/amphibole

Sandstone (specifically Picture Sandstone or Wonderstone)

Arenite (composed primarily of SiO2)

Almandine Garnet

Almandine (Fe3Al2(SiO4)3)

Mixed Tumbled Rocks and Minerals Collection

Mixed Minerals and Rocks (Quartz, Feldspar, Jasper, Agate, Lapis Lazuli, Sodalite, Rose Quartz, Fluorite, etc.)

Quartzite Pebble

Quartzite (mostly SiO2)

Blue Quartz (or Blue Aventurine)

Silicon Dioxide (SiO2) with inclusions (typically Crocidolite or Dumortierite)

Greenstone pebble (likely serpentinite)

Serpentinite, composed mainly of serpentine-group minerals

Sandstone (specifically Arkose or Ferruginous Sandstone)

Sandstone (SiO2 predominant)

Chrysotile Asbestos

Mg3Si2O5(OH)4

Granite

Phaneritic intrusive igneous rock

Basalt with Vesicle/Vug

Basalt (Aphanitic Mafic Igneous Rock)

Quartz Sand Grain / Micro Crystal

Silicon Dioxide (SiO2)

Gneiss (specifically a weathered Amphibolite or Garnet Gneiss)

Gneiss (complex silicate composition)

Amphibolite (likely)

Amphibolite, composed mainly of hornblende-group amphibole and plagioclase feldspar

Greenstone pebble (identification uncertain from photo)

Greenstone, typically metamorphosed mafic rock composed of chlorite, actinolite, and epidote

Lapis Lazuli

Lapis Lazuli (Mineral composition: Lazurite, Calcite, Sodalite, and Pyrite)

Lapis Lazuli

Lapis Lazuli (Complex silicate rock containing Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, Calcite, and Pyrite)

Green Quartzite (Aventurine-like)

Quartzite (primarily SiO2 with chromium-rich mica or chlorite inclusions)

Small green-gray pebble (likely serpentinite)

Serpentinite, composed mainly of serpentine-group minerals

Serpentinite

Serpentinite (a rock composed predominantly of serpentine group minerals)

Pink Granite

Phaneritic Felsic Igneous Rock (composed primarily of K-feldspar, Quartz, and Biotite)

Dark foliated metamorphic rock, likely amphibolite

Amphibolite, typically composed mainly of hornblende and plagioclase feldspar

Banded Gneiss

Gneiss (Metamorphic rock composed of feldspar, quartz, and mica)

Granite

Granite

Gneiss (High-Grade Metamorphic Rock)

Gneiss (primarily composed of Quartz, Feldspar, and Mica/Amphiboles)