Greenish Feldspathic Rock / Epidote Granite (Unakite-type or Epidote-bearing rock)
Epidotized Metamorphic/Igneous Rock
metamorphic
Category
Mineral Like Byproduct (Often Mistaken For Igneous Rock Or Meteorite)
Browse mineral like byproduct (often mistaken for igneous rock or meteorite) specimens identified by the Rock Identifier community.
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Dalmatian Jasper
Dalmatian Stone (not a true Jasper, primarily a Perthitic Feldspar with Arfvedsonite)
igneous
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Porphyritic Basalt or Spotted Pebble
Porphyritic volcanic rock with phenocrysts
igneous
Jasper and Basalt Pebble
Polymineralic lithic pebble
igneous and sedimentary
Quartzite Pebble
Quartzite (SiO2 with minor impurities)
metamorphic
Obsidian
Volcanic Glass (predominantly SiO2)
igneous
Granite
Granite (a felsic intrusive igneous rock)
Igneous Rock
Granite
Phaneritic Plutonic Felsic Rock
igneous
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Greenstone (Prase / Nephrite / Serpentine mix)
Metamorphosed ultramafic rock / greenstone facies
metamorphic
Basalt with Quartz Vein
Basalt (SiO2 vein inclusion)
igneous
Granitic Gneiss
Gneiss (high-grade metamorphic rock primarily of quartz, feldspar, and mica)
metamorphic
Banded Gneiss (River Rock/Pebble)
Gneiss (specifically a banded variety often found as a river rock)
Metamorphic Rock
Green Apophyllite and Stilbite on Quartz Cluster
Apophyllite-(K) (KCa4(Si8O20)(F,OH)·8H2O), Stilbite-Ca (NaCa4(Si27Al9)O72·28H2O), Quartz (SiO2)
Mineral
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Basalt
Mafic Igneous Rock (composed primarily of plagioclase, pyroxene, and olivine)
igneous
Basalt with Epidote
Mafic volcanic rock with Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
igneous
Basalt with Quartz/Calcite Veins
Basalt (Aphanitic Mafic Igneous Rock)
igneous
Ruby in Zoisite
Anyolite (composite of Corundum and Zoisite)
metamorphic
Basalt with Secondary Mineralization (Likely Zeolites or Calcite)
Aphanitic mafic volcanic rock with secondary mineral inclusions (e.g., CaAl2Si3O10·3H2O for Scolecite)
igneous
Vesicular Basalt (Lava Rock)
Vesicular basalt
igneous
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Greenstone (Epidote/Chlorite Rich Rock)
Metabasalt (often contains Epidote Ca2Al2(Fe3+;Al)(SiO4)(Si2O7)O(OH))
metamorphic
Granite
Granite
igneous
Gneiss
Gneiss
metamorphic
Granite
Granitic intrusive igneous rock
igneous
Que Sera Stone (Llanite with Feldspar and Quartz)
Rhyolite with blue quartz and pink orthoclase (Llanite-type quartz porphyry)
igneous
Banded Gneiss (with Quartz Vein)
Gneiss (Metamorphic rock of varying mineralogy)
metamorphic
Nickel
Nickel (Ni)
mineral
Basalt
Basalt
igneous
Milky Quartz
Quartz / Silicon Dioxide (SiO2)
mineral
Diorite (River Pebble)
Phaneritic Intermediate Igneous Rock (Diorite)
igneous
Granite
Granite (Felsic Intrusive)
igneous
Greenstone / Diabase Porphyry
Porphyritic Diabase (Micro-gabbro)
Igneous
Quartzite
Quartzite (primarily SiO2)
metamorphic
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
River Stone (likely Basalt or Gabro)
Mafic Igneous Rock
igneous
Wild Horse Magnesite
Magnesite with Hematite inclusions (MgCO3)
mineral
Greenstone or Epidote-rich Metamorphic Rock
Chlorite/Epidote Schist or Greenstone
metamorphic
Quartz
Silicon Dioxide (SiO2)
mineral
Basalt with Granite Inclusions (Xenoliths)
Mafic igneous rock (Basalt) with Sialic minerals
igneous