Mineral (Found In Igneous And Metamorphic Rocks)

Gneiss (specifically Amphibolite Gneiss)

Gneiss

Amazonite

KAlSi3O8 (Potassium Aluminum Silicate) - a variety of Microcline Feldspar

Rhodonite

Manganese Silicate (Mn,Fe,Mg,Ca)SiO3

Yellow Quartz (Citrine Quartz Pebble)

Silicon Dioxide (SiO2)

Kyanite

Kyanite (Al2SiO5)

Gneiss (specifically a granitic gneiss cobble)

Gneiss (high-grade regional metamorphic rock)

Pyrite

Pyrite (Iron sulfide, FeS₂)

Rhodonite

Manganese Silicate (Mn,Fe,Mg,Ca)SiO3

Greenstone

Metabasalt / Chlorite-Epidote Schist

Milky Quartz

Silicon Dioxide (SiO2)

Pebble (likely Quartz or Chert)

SiO₂ (Silicon Dioxide) - referring to the likely main mineral composition, Quartz. If it's chert, the scientific name remains SiO₂ with a microcrystalline structure.

Banded Gneiss

Gneiss (High-grade regional metamorphic rock)

Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Sunstone

Plagioclase Feldspar (specifically Oligoclase variety containing hematite or goethite inclusions)", composition: (Ca,Na)(Al,Si)2Si2O8

Granite

Granite (a felsic intrusive igneous rock)

Schist

Mica Schist (primarily Muscovite or Biotite sheet silicates)

Milky Quartz

Silicon Dioxide (SiO2)

Green Aventurine

Quartz with Fuchsine inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)

Quartz

Quartz (Silicon Dioxide - SiO2)

Fuchsite (Chrome Mica)

K(Al,Cr)2(AlSi3O10)(OH)2

Fuchsite

Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)

Banded Gneiss

Gneiss (High-grade regional metamorphic rock)

Schist

Schist (various mineralogical compositions including mica, chlorite, talc, etc.)

Serpentine

Serpentinite (a rock composed primarily of serpentine minerals like antigorite, chrysotile, and lizardite; general formula (Mg, Fe)3Si2O5(OH)4)

Foliated Gneiss (River-Worn Pebble)

Gneiss (High-grade Regional Metamorphic Rock)

Gneiss

High-grade Metamorphic Gneiss

Nephrite Jade (or Serpentine)

Nephrite (a variety of amphibole mineral tremolite-actinolite) or Serpentine Group minerals

Quartz Crystal Cluster

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Sodalite

Sodalite (Na4Al3Si3O12Cl)

Nephrite Jade

Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2)

Strawberry Quartz

Quartz (SiO₂) with Goethite (α-FeO(OH)) and/or Lepidocrocite (γ-FeO(OH)) inclusions

Healer's Gold (Pyrite and Magnetite in Schist)

Magnetite (Fe3O4) and Pyrite (FeS2) in Mica Schist

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz (vein quartz)

SiO2 (Silicon Dioxide)

Ruby

Corundum (Al2O3 with Chromium traces)

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with iron inclusions)

Gneiss

Gneiss (High-grade regional metamorphic rock)

Orange Quartz (Citrine or Iron-stained Quartz)

Silicon Dioxide (SiO2)

Banded Gneiss

Gneiss (variable mineral composition)

Serpentine Jade (New Jade/Olive Jade)

Serpentinite (a rock composed primarily of serpentine minerals) / Mg3Si2O5(OH)4 for Antigorite and Lizardite

Lapis Lazuli

Tectosilicate (Na,Ca)8(AlSiO4)6(SO4,S,Cl,OH)2