Rock Identifier

Category

Mineral On Igneous Rock

Browse mineral on igneous rock specimens identified by the Rock Identifier community.

Note: Item is not a geological specimen (n/a) — none

Note: Item is not a geological specimen

n/a

none
Basalt (Water-worn pebble) (Mafic Igneous Rock (primarily Plagioclase feldspar and Pyroxene)) — igneous

Basalt (Water-worn pebble)

Mafic Igneous Rock (primarily Plagioclase feldspar and Pyroxene)

igneous
Clear Quartz (Rock Crystal) (Silicon Dioxide (SiO2)) — mineral

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

mineral
Clear Quartz (Rock Crystal) (Silicon Dioxide (SiO2)) — mineral

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

mineral
Quartz (Quartz (SiO₂ - Silicon Dioxide)) — Mineral

Quartz

Quartz (SiO₂ - Silicon Dioxide)

Mineral
Basalt (Mafic volcanic rock (primarily plagioclase feldspar and pyroxene)) — igneous

Basalt

Mafic volcanic rock (primarily plagioclase feldspar and pyroxene)

igneous
Muscovite Mica (Muscovite (Potassium Aluminum Silicate Hydroxide Fluoride), KAl2(AlSi3O10)(OH,F)2) — mineral

Muscovite Mica

Muscovite (Potassium Aluminum Silicate Hydroxide Fluoride), KAl2(AlSi3O10)(OH,F)2

mineral
Porphyry (Porphyritic Rock) — igneous

Porphyry

Porphyritic Rock

igneous
Dalmatian Stone (Dalmatian Jasper (a misnomer) / Perthitic Igneous Rock) — igneous

Dalmatian Stone

Dalmatian Jasper (a misnomer) / Perthitic Igneous Rock

igneous
Green Aventurine and Clear Quartz (Green Aventurine (Silicon Dioxide - SiO2 with Fuchsite inclusions); Clear Quartz (Silicon Dioxide - SiO2)) — Mineral

Green Aventurine and Clear Quartz

Green Aventurine (Silicon Dioxide - SiO2 with Fuchsite inclusions); Clear Quartz (Silicon Dioxide - SiO2)

Mineral
Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

igneous
Banded Gneiss (Gneiss (High-grade regional metamorphic rock)) — metamorphic

Banded Gneiss

Gneiss (High-grade regional metamorphic rock)

metamorphic
Corundum (Corundum (Al2O3)) — Mineral

Corundum

Corundum (Al2O3)

Mineral
Garnet Beads (Garnet Group (complex nesosilicates, e.g., Almandine Fe3Al2(SiO4)3)) — Mineral

Garnet Beads

Garnet Group (complex nesosilicates, e.g., Almandine Fe3Al2(SiO4)3)

Mineral
Red Scoria (Lava Rock) (Scoria (Vesicular Basalt/Andesite)) — igneous

Red Scoria (Lava Rock)

Scoria (Vesicular Basalt/Andesite)

igneous
Quartz (pebble) (Quartz (SiO₂)) — Mineral

Quartz (pebble)

Quartz (SiO₂)

Mineral
Limonite-stained Granite (Felsic Plutonic Rock with Hydrated Iron Oxides) — igneous

Limonite-stained Granite

Felsic Plutonic Rock with Hydrated Iron Oxides

igneous
Milky Quartz (Quartz (Silicon Dioxide, SiO2)) — mineral

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

mineral
Diorite (Phaneritic Intermediate Plutonic Rock (Diorite)) — igneous

Diorite

Phaneritic Intermediate Plutonic Rock (Diorite)

igneous
Porphyry (Flower Stone) (Porphyry (Andesite or Basalt matrix)) — igneous

Porphyry (Flower Stone)

Porphyry (Andesite or Basalt matrix)

igneous
Banded Gneiss (with possible weathered sulfide or iron staining) (Gneiss, potentially with iron oxide/hydroxide staining (e.g., limonite) or weathered sulfides) — Metamorphic

Banded Gneiss (with possible weathered sulfide or iron staining)

Gneiss, potentially with iron oxide/hydroxide staining (e.g., limonite) or weathered sulfides

Metamorphic
Rose Quartz (Silicon dioxide (SiO2) with trace amounts of titanium, iron, or manganese) — mineral

Rose Quartz

Silicon dioxide (SiO2) with trace amounts of titanium, iron, or manganese

mineral
Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

mineral
Banded Gneiss (Gneiss (variable mineral composition)) — metamorphic

Banded Gneiss

Gneiss (variable mineral composition)

metamorphic
Gneiss (Gneiss (High-grade Regional Metamorphic Rock)) — metamorphic

Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

metamorphic
Pumice (Vesicular Rhyolite (highly vesicular igneous volcanic rock)) — igneous

Pumice

Vesicular Rhyolite (highly vesicular igneous volcanic rock)

igneous
Basalt River Pebble (Basalt (Aphanitic Mafic Volcanic Rock)) — igneous

Basalt River Pebble

Basalt (Aphanitic Mafic Volcanic Rock)

igneous
Granite (Granite (Felsic intrusive igneous rock)) — igneous

Granite

Granite (Felsic intrusive igneous rock)

igneous
Grey Granite (Phaneritic Felsic Igneous Rock (primarily Quartz, Feldspar, and Mica)) — igneous

Grey Granite

Phaneritic Felsic Igneous Rock (primarily Quartz, Feldspar, and Mica)

igneous
Sandstone (Quartz Sandstone (predominantly)) — Sedimentary

Sandstone

Quartz Sandstone (predominantly)

Sedimentary
Note: No specimen visible — N/A

Note: No specimen visible

N/A
Granite (Granite (a phaneritic intrusive igneous rock consisting mainly of quartz, alkali feldspar, and plagioclase)) — igneous

Granite

Granite (a phaneritic intrusive igneous rock consisting mainly of quartz, alkali feldspar, and plagioclase)

igneous
Amygdaloidal Basalt (Amygdaloidal Basalt (Host rock) with Quartz or Calcite amygdules) — igneous

Amygdaloidal Basalt

Amygdaloidal Basalt (Host rock) with Quartz or Calcite amygdules

igneous
Yellow Quartz (Citrine Quartz or Yellow Jasper) (Silicon Dioxide (SiO2) with iron impurities) — mineral

Yellow Quartz (Citrine Quartz or Yellow Jasper)

Silicon Dioxide (SiO2) with iron impurities

mineral
Basalt (Basalt (Aphanitic Mafic Igneous Rock)) — igneous

Basalt

Basalt (Aphanitic Mafic Igneous Rock)

igneous
Porphyritic Basalt (Chinese Flower Stone / Chrysanthemum Stone basalt variety) (Porphyritic Basalt containing Plagioclase Feldspar phenocrysts) — igneous

Porphyritic Basalt (Chinese Flower Stone / Chrysanthemum Stone basalt variety)

Porphyritic Basalt containing Plagioclase Feldspar phenocrysts

igneous
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.) — Sedimentary Rock

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.

Sedimentary Rock
Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

mineral
Clear Quartz (Rock Crystal) (Silicon Dioxide (SiO2)) — mineral

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

mineral
Basalt (Basalt (Mafic Extrusive Igneous Rock)) — igneous

Basalt

Basalt (Mafic Extrusive Igneous Rock)

igneous
Granodiorite (Granodiorite (Intermediate intrusive igneous rock)) — igneous

Granodiorite

Granodiorite (Intermediate intrusive igneous rock)

igneous
Black Obsidian (Volcanic Glass (SiO2 + impurities)) — igneous

Black Obsidian

Volcanic Glass (SiO2 + impurities)

igneous