Mineral In Metamorphic Rock

Greenstone, likely altered basalt (possibly serpentinite)

Metabasalt/greenschist; commonly chlorite–actinolite–epidote ± serpentine

Almandine Garnet

Iron aluminum silicate (Fe3Al2(SiO4)3)

Weathered schist or phyllite

Mica schist/phyllite; quartz–mica-rich foliated metamorphic rock

Small quartz-rich pebble or rock fragment

Quartz (silicon dioxide, SiO₂), possibly with iron-oxide staining or host-rock inclusions

Muscovite mica

Muscovite, KAl₂(AlSi₃O₁₀)(OH)₂

Black Tourmaline

Schorl (Na(Fe²⁺)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)

Prehnite

Prehnite (Ca2Al(AlSi3O10)(OH)2)

Schist

Mica Schist (Metamorphic Rock)

Gneiss (likely biotite–quartz–feldspar gneiss)

Foliated gneiss; primarily quartz (SiO₂), feldspar, and biotite mica

Epidote

Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))

Biotite Schist (likely)

Biotite Schist (rock), Biotite (mineral)

Milky Quartz Pebble

Silicon Dioxide (SiO2)

Clear Quartz Crystal

Silicon Dioxide (SiO2)

Emerald in Matrix (Quartz/Schist)

Beryl (Be₃Al₂Si₆O₁₈) with Chromium/Vanadium impurities

Quartz-rich gravel fragment

Quartz (silicon dioxide, SiO₂), possibly with feldspar or carbonate inclusions

Weathered mafic metamorphic rock, likely amphibolite

Amphibolite; chiefly hornblende amphibole and plagioclase feldspar, with possible biotite, epidote, and quartz

Banded metamorphic rock, likely mica schist

Mica schist, chiefly quartz, muscovite/biotite, and feldspar

Weathered quartz-rich metamorphic rock, likely quartzite

Quartzite; predominantly quartz (SiO₂), possibly with feldspar, mica, and iron-oxide staining

Biotite Mica

Biotite (K(Mg,Fe)3AlSi3O10(OH,F)2)

Weathered schist or foliated metamorphic rock

Mica schist, possibly phyllite; exact identification requires a fresh surface and testing

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Quartz-rich rock fragment

Likely milky quartz (SiO₂), possibly a pale quartzite fragment

Raw dark metamorphic rock, likely schist or slate

Mica schist or phyllite; commonly quartz–mica–chlorite aggregate

Gneiss (River Cobble)

Gneiss (Foliated Metamorphic Rock)

Serpentinite (often called Jade or Nephrite substitute)

Serpentinite (composed primarily of Antigorite, Lizardite, or Chrysotile)

Fuchsite

K(Al,Cr)2(AlSi3)O10(OH)2

Schist

Crystalline Metamorphic Rock (Schistose)

Gneiss

High-grade Metamorphic Gneiss

Milky Quartz with Chlorite/Epidote

Silicon Dioxide (SiO2) with phyllosilicate or sorosilicate inclusions

Potassium Feldspar (Microcline / Orthoclase)

KAlSi3O8

Garnet Schist

Almandine Garnet-bearing Mica Schist

Lazulite Quartzite

Quartzite with Lazulite (SiO2 with (Mg,Fe)Al2(PO4)2(OH)2)

Drill Core Samples (Varied Lithology)

Multi-lithological core samples (containing potential granite, marble, and phyllite/schist sequence)

Dark mica-rich metamorphic rock, likely schist

Mica schist, probably biotite–muscovite schist; exact identification requires testing

Quartz-veined Metamorphic Rock

Quartz Vein in Phyllite or Schist (SiO2 in Silicate Matrix)

Moonstone

Orthoclase Feldspar (KAlSi3O8)

Pink Granite Gneiss

Gneiss (High-grade metamorphic rock)

Pink-and-white quartz-rich pebble

Quartz (SiO₂), likely massive quartz with iron-oxide staining and possible feldspar inclusions

Small polished or naturally worn stone, possibly quartz-bearing rock

Indeterminate from the blurred image; likely quartz (SiO₂) or a pale feldspar-rich fragment

Quartz fragment (Pebble)

Silicon Dioxide (SiO2)

Quartz on Schist

Silicon Dioxide (SiO2) on Foliated Metamorphic Rock

Clear Quartz (Faceted Crystal)

Silicon Dioxide (SiO2)