Mineral On Igneous Rock

Milky Quartz

Crystalline Silicon Dioxide (SiO2)

Quartz (Vein Quartz)

Silicon Dioxide (SiO2)

Diorite

Diorite (Intermediate intrusive igneous rock)

Blue Apatite

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

Basalt with Iron Oxidation

Mafic Igneous Rock (primarily Plagioclase and Pyroxene)

Milky Quartz (Common Quartz)

Quartz (Silicon Dioxide, SiO2)

Granite

Granite (a plutonic igneous rock)

Banded Gneiss

Gneiss

Granite (Thin Section)

Granite (Felsic Plutonic Rock)

Granite

Intrusive Felsic Igneous Rock

Granite

Phaneritic Igneous Rock (Granite)

Granite

Phaneritic Granocrystalline Igneous Rock

Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Granite

Granite (Phaneritic intrusive igneous rock)

Vesicular Basalt (or Porphyritic Scoria)

Vesicular Basalt

Unidentified Rock Fragment

Unknown

Diorite (River Rock/Cobble)

Intermediate Plutonic Igneous Rock (Diorite)

Gneiss (specifically Granitic Gneiss)

Gneiss (composed primarily of Quartz, Feldspar, and Biotite/Amphibole)

Basalt

Extrusive mafic igneous rock

Epidote

{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)

Gneiss (with Mica and Quartz)

Gneissic Metamorphic Rock

Granite

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

Granodiorite

Granodiorite (Intermediate intrusive igneous rock)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Orbicular Granite

Orbicular Granidiorite / Plutonic Igneous Rock

Basalt (with possible mineral veining)

Basalt (Aphanitic Mafic Igneous Rock)

Diorite (River Pebble)

Intermediate plutonic igneous rock

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Biotite (Mica)

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

Unidentifiable Specimen

Undetermined

Quartz

Silicon Dioxide (SiO2)

Mahogany Obsidian

Obsidian (Volcanic Glass) with Hematite/Magnetite inclusions

Granite

Intrusive Igneous Rock (composed of Quartz, Alkali Feldspar, and Plagioclase)

Biotite Mica

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

Pink Granite

Phaneritic Felsic Igneous Rock (composed of orthoclase, quartz, and plagioclase)

Granite Cobble

Granite (Phaneritic Igneous Rock)

Pink Granite

Phaneritic Felsic Intrusive Igneous Rock

Milky Quartz

Silicon Dioxide (SiO2)

Olivine in Basalt (Peridot)

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

Amygdaloidal Basalt

Vesicular Basalt with secondary mineral infilling (commonly Zeolite, Calcite, or Quartz)

Garnet

Almandine (Fe3Al2(SiO4)3)