Pink Granite (Potassium-rich)
Phaneritic Felsic Igneous Rock (K-Feldspar Granite)
igneous
Category
Granite
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Granite (specifically Pink or Alkali Feldspar Granite)
Felsic Plutonic Rock (primarily SiO2 with KAlSi3O8)
igneous
Glacial Cobbles (predominantly Granite and Gneiss)
Mixed lithologies (Quartz, Feldspar, Mica assemblage)
igneous and metamorphic
Granite (Specimen: Logan Rock)
Phaneritic plutonic igneous rock (mainly Quartz, Feldspar, and Mica)
igneous
Granite River Pebble
Phaneritic Felsic Igneous Rock (Granite)
igneous
Potassium Feldspar
Orthoclase (KAlSi3O8)
mineral
Greisen (Quartz-Muscovite-Turretine Rock)
Greisen
Metamorphic Rock
Rose Quartz
Rose Quartz (SiO2 with traces of Titanium, Iron, or Manganese)
mineral
Diorite
Intrusive Igneous Rock (Intermediate Composition)
igneous
Diorite with Xenolith
Intermediate Plutonic Igneous Rock (Diorite)
igneous
Banded Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Diabase (Greenstone)
Diabase (also known as Dolerite)
igneous
Feldspathic Gneiss
Feldspathic Gneiss (High-grade regional metamorphic rock)
metamorphic
Greenschist
Greenschist (containing Chlorite, Epidote, and Actinolite)
metamorphic
Granite (with Beryl/Aquamarine)
Granite (Feldspar, Quartz, Mica, and Beryl Be3Al2Si6O18)
igneous
Granitoid (Granitic Rock)
Granitoid (Quartzo-feldspathic plutonic rock)
igneous
Granite with Orthoclase and Hematite Staining
Phaneritic Felsic Igneous Rock (primarily SiO2 with KAlSi3O8)
igneous
Orange Quartzite (with Iron Staining)
Quartzite (SiO2)
metamorphic
Porphyritic Rhyolite (Red)
Rhyolite (Porphyry)
igneous
Granite Pebble (River Rock)
Granite (composed primarily of Quartz, Feldspar, and Mica)
igneous
Gneiss
Gneiss
metamorphic
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Diorite
Diorite
igneous
Diorite (Salt and Pepper Rock)
Diorite (comprising Plagioclase Feldspar, Hornblende, and Biotite)
igneous
Feldspar
KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8
mineral
Diorite
Intermediate Phaneritic Igneous Rock
igneous
Gneiss
Gneiss
metamorphic
Sandstone (Arkose)
Arkose Sandstone (principally SiO2 with Feldspar)
sedimentary
Crushed Granite Gravel
Granite (composed primarily of Quartz, Alkali Feldspar, and Plagioclase Feldspar)
igneous
Granodiorite
Granodiorite
igneous
Labradorite (Larvikite variety)
Plagioclase Feldspar (Na,Ca)(Al,Si)4O8 with Monzonite/Syenite matrix
igneous
Crushed Stone (Likely Granite or Diabase)
Intrusive Igneous Rock (Granitoid/Gabbroid)
igneous
Vesicular Rhyolite
Rhyolite (High-silica volcanic rock)
igneous
Unakite (or Epidotized Granite)
Epidotized Granite (Composition: KAlSi3O8, Ca2(Al,Fe)3(SiO4)3(OH), SiO2)
metamorphic
Smoky Quartz with Iron Inclusions
Silicon Dioxide (SiO2)
mineral
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Granitic Gneiss
Gneiss (Metamorphic rock of granitic composition)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Milky Quartz Pebble
Crystalline Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral