Mineral In Metamorphic Rock

Serpentine (Nephrite-like River Cobble)

Serpentinite (Hydrous Magnesium Iron Silicate)

Gold Ore

Native Gold (Au) in Matrix

Mica Schist

Mica Schist

Mica Schist

Mica Schist (KAl2(AlSi3O10)(OH)2 - Muscovite component)

Schist (Chlorite or Mica-rich)

Chlorite Schist

Milky Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Unakite

Epidotized Granite

Quartzite

Quartzite (Primary mineral: SiO2)

Serpentinite

Serpentinite (composed primarily of minerals in the Serpentine group: Chrysotile, Lizardite, and Antigorite)

Lapis Lazuli

Lapis Lazuli (Rock containing Lazurite, Calcite, and Pyrite)

Amethyst

Amethyst (Silicon Dioxide, SiO2)

Banded Gneiss

Gneiss (typically quartz, feldspar, mica, amphibole composition)

Orthoclase Feldspar

Orthoclase (KAlSi3O8)

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals: (Mg,Fe)3Si2O5(OH)4)

Quartz Pebble (Citrine-colored or Stained Quartz)

Silicon Dioxide (SiO2)

Quartz / Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Jade

There are two distinct minerals commonly known as Jade: Nephrite (a calcium magnesium silicate - Ca2(Mg,Fe)5Si8O22(OH)2) and Jadeite (a sodium aluminum silicate - NaAlSi2O6). Based on the image showing a typically softer, more fibrous appearance, it is likely Nephrite.

Quartz (Iron-Stained Quartz Pebble)

Silicon Dioxide (SiO2)

Lapis Lazuli

Lazurite-dominant rock, (Na,Ca)8(AlSiO4)6(SO4,S,Cl)2

Gneiss

Gneiss

Schist

Mica Schist (formula variable based on mineral content, typically containing [K,Al,Fe,Mg,Si,O,H])

Rose Quartz

Silicon Dioxide with trace inclusions of dumortierite or titanium (SiO2)

Gneiss

Gneiss

Corundum (Ruby variety)

Aluminium oxide (Al2O3)

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with iron oxide inclusions)

Diorite Gneiss

Foliated Diorite Gneiss

Nuummite

Nuummite (Orthoamphibole rock composed of Anthophyllite and Gedrite, (Mg,Fe)7Si8O22(OH)2)

Quartz (Milky/Smoky variety)

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Black Star Diopside

Diopside (CaMgSi2O6) with asterism

Mica Schist

Medium-grade regional metamorphic rock (composition varies)

Schist

Lepidoblastic Mica Schist

Micaceous Rock (likely Muscovite Schist/Gneiss or a Muscovite-rich Specimen)

Predominantly Muscovite (KAl2(AlSi3O10)(F,OH)2), often found in rocks like Muscovite Schist or Muscovite Gneiss.

Green Aventurine

Aventurine (variety of Quartz - SiO2)

Quartz (River Siltstone Quartzite Pebble)

Silicon Dioxide (SiO2)

Blue Quartzite

Quartzite (primarily SiO2) with inclusions like Dumortierite or Magnesio-riebeckite

Unakite (Epidotized Granite)

Epidote-Feldspar-Quartz Rock

Banded Gneiss (River Cobble)

Gneiss (High-grade regional metamorphic rock)

River Stone / Pebble

Clastic Sediment (composed largely of Quartz, Feldspar, and various rock fragments)

Smoky Quartz and Biotite Schist

Quartz-Biotite Schist (SiO2 + K(Mg,Fe)3AlSi3O10(F,OH)2)

Clear Quartz (or Rock Crystal)

Quartz (SiO₂)