Minerals

Gneiss (likely Granitic Gneiss)

Gneiss

Diorite

Diorite (Intermediate intrusive igneous rock)

Granite

Granite (Mainly Quartz, Alkali Feldspar, and Plagioclase)

Banded Gneiss

Gneiss (high-grade metamorphic silicate rock)

Granite Gneiss

Gneiss (High-grade Metamorphic Rock)

Gneiss

Gneiss (high-grade metamorphic rock)

Banded Gneiss Pebble

Gneiss (Metamorphic Rock)

Diorite

Diorite (Phaneritic intermediate plutonic rock)

Diorite

Diorite (Intermediate intrusive igneous rock)

Gneiss (Metamorphic Pebble)

Gneiss (SiO2-rich metamorphic rock)

Gneiss

Gneiss

Granite

Granite (Felsic Plutonic Rock)

Granodiorite

Granodiorite

Quartz with Inclusions

Silicon Dioxide (SiO2)

Amygdaloidal Basalt with Agate/Zeolite Amygdules

Basalt (extrusive igneous rock) containing secondary mineral fillings

Quartz with Sulfide Inclusions

Silicon Dioxide (SiO2) with metallic mineral inclusions

Likely granite or granitic gneiss

Granite: coarse-grained felsic intrusive rock, typically quartz, potassium feldspar, plagioclase, and mica; the image alone cannot distinguish it confidently from gneiss.

Granite pebble

Granite, a coarse-grained quartz–feldspar rock with dark mica or amphibole

Copper Ore

Mixed copper sulfides/oxides in gangue matrix

Weathered mica schist (tentative)

Mica schist, likely muscovite–biotite schist with quartz and feldspar

Lepidolite

K(Li,Al)3(Si,Al)4O10(F,OH)2

Milky quartz vein rock

Quartz (SiO₂), likely massive vein quartz with minor iron staining or host-rock inclusions

Iron-stained quartz

Quartz (SiO₂), colored by iron-oxide staining

Greenstone

Metabasalt / Greenschist

Quartz pebble

Silicon dioxide (SiO2)

Rounded quartz-rich pebble

Likely milky quartz or quartzite (SiO₂), identification uncertain from image

Quartz Pebble

Silicon dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Milky quartz with iron staining

Quartz (SiO₂), likely iron-oxide-stained vein quartz

White beach pebbles, likely milky quartz

Probably quartz (SiO₂); exact identification is uncertain from the image

Milky quartz (massive quartz)

Quartz, silicon dioxide (SiO₂)

Likely quartz-rich pebble

Quartz (SiO₂), possibly iron-stained milky quartz or quartzite

Rounded pale quartz-rich pebble

Likely milky quartz or quartzite (SiO₂); exact identification is uncertain from the photograph

Quartz with Mica/Host Rock

Silicon Dioxide (SiO2) with Phyllosilicates

Mica-rich schist (likely biotite schist)

Mica schist, composed chiefly of quartz and mica; exact minerals cannot be confirmed from the image

Greenschist

Chlorite Schist (Greenschist Facies)

Weathered greenish metamorphic rock, likely serpentinite

Serpentinite, dominated by serpentine-group minerals (commonly antigorite, lizardite, or chrysotile)

Potassium Feldspar (Orthoclase)

Orthoclase (KAlSi3O8)

Vesicular basalt pebble

Basalt, a mafic volcanic rock composed mainly of plagioclase feldspar, pyroxene, and often olivine

Pegmatitic granite

Coarse-grained granite/pegmatite, chiefly quartz, feldspar, and mica

Quartz-rich pegmatite (likely feldspar–quartz rock)

Granitic pegmatite; predominantly quartz (SiO₂) and feldspar, with possible mica and iron-oxide staining

Gneiss

Gneiss (High-grade metamorphic rock)