Mineral In Igneous Rock

Granite

Granite (composed mainly of Quartz, Feldspar, and Mica)

Pink Granite

Felsic intrusive igneous rock

Diorite

Diorite (an intrusive igneous rock)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Granite

Granite (Phaneritic intrusive igneous rock)

Olivine in Basalt (Peridot)

Magnesium Iron Silicate (Mg,Fe)2SiO4 (Mineral) / Scoriaceous Basalt (Host Rock)

Orbicular Granite

Orbicular Granidiorite / Plutonic Igneous Rock

Magnetite / Iron Ore

Magnetite (Fe3O4)

Chrysocolla (on host rock)

Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Copper silicate)

Basalt

Extrusive mafic igneous rock

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Basalt with Iron Oxidation

Mafic Igneous Rock (primarily Plagioclase and Pyroxene)

Mahogany Obsidian

Obsidian (Volcanic Glass) with Hematite/Magnetite inclusions

Blue Apatite

Apatite - Ca5(PO4)3(F,Cl,OH)

Quartz

Silicon Dioxide (SiO2)

Clear Quartz Crystal

Quartz (Silicon Dioxide - SiO2)

Unakite or Epidosite

Epidosite (Mineral composition: Epidote, Feldspar, and Quartz)

Quartz (Vein Quartz)

Silicon Dioxide (SiO2)

Basalt

Basalt (Igneous Volcanic Rock)

Granite

Phaneritic Felsic Igneous Rock

Basalt

Extrusive Mafic Igneous Rock

Granite (Thin Section)

Granite (Felsic Plutonic Rock)

Granite

Granite (Felsic Plutonic Rock)

Gneiss

Gneiss

Unidentified Rock Fragment

Unknown

Basalt

Basalt (extrusive igneous rock)

Milky Quartz

Crystalline Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Banded Gneiss

Gneiss

Greenstone (Epidote/Chlorite Rich Rock)

Metabasalt (often contains Epidote Ca2Al2(Fe3+;Al)(SiO4)(Si2O7)O(OH))

Greenstone or Epidote-rich rock

Epidote or Chlorite schist/greenstone

Granite Cobble

Granite (Phaneritic Igneous Rock)

Banded Gneiss

Gneiss (high-grade metamorphic silicate rock)

Unidentifiable Specimen

Undetermined

Vesicular Basalt (or Porphyritic Scoria)

Vesicular Basalt

Olivine/Peridot

Magnesium Iron Silicate (Mg,Fe)2SiO4

Basalt

Mafic Igneous Rock (primarily Plagioclase Feldspar and Pyroxene)

White Quartz

Silicon Dioxide (SiO2)

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

Basalt with Calcite Veins

Basalt (containing CaCO3 inclusions)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)