Epidote (Greenstone)
Epidote (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH))
metamorphic
Category
Igneous Or Metamorphic (Base Stone); Anthropogenic (Decoration)
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Epidote
Epidote {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
mineral
Basalt Pebble
Basalt
igneous
Greenschist
Greenschist (Chlorite-actinolite schist)
metamorphic
Gneiss
Gneiss (Foliated Metamorphic Rock)
metamorphic
Greenstone
Greenschist / Meta-basalt
metamorphic
Slag
Anthropogenic Vitreous Silicate / Ferro-silicate Slag
igneous
Concrete with Exposed Aggregate
Anthropogenic conglomerate (Concrete)
man-made rock (sedimentary analogue)
Sodalite in Quartz
Na8(Al6Si6O24)Cl2 (Sodalite) / SiO2 (Quartz)
metamorphic
Greenstone
Metabasalt
metamorphic
Greenstone
Metabasalt / Chlorite-Epidote Schist
metamorphic
Polished Marble (likely Carrara-type with Iron oxides)
Metamorphosed Carbonate (CaCO3)
metamorphic
Bornite
Bornite (Cu5FeS4)
mineral
Aggregate Concrete
Anthropogenic Conglomerate (Technosol)
sedimentary
River Cobble (Quartzite / Granitic Gneiss)
Metamorphic Quartzite / Granitic Gneiss
metamorphic
Fossil Coral
Cnidaria Anthozoa (Fossilized)
sedimentary
Epidote
Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
mineral
K2 Stone
Azurite in Granite
igneous
Chert (Blue-Gray Chert)
Microcrystalline quartz (SiO2)
sedimentary
Epidote (Unakite variety)
Epidosite (Metasomatic rock containing Ca2(Al,Fe)3(SiO4)3(OH))
metamorphic
Gneiss
Gneiss
metamorphic
Citrine Quartz
Silicon Dioxide (SiO2) with iron impurities
mineral
Gneiss (Hornblende/Biotite Gneiss)
Foliated Metamorphic Rock (Quartz-Feldspar-Amphibole/Mica matrix)
metamorphic
Connemara Marble
Calcitic Marble / Serpentinite composite
metamorphic
Citrine Quartz
Silicon Dioxide (SiO2) with iron impurities
mineral
Banded Gneiss
Metamorphic Gneiss
metamorphic
Ferro-slag (Leland Blue/Slag Glass)
Anthropogenic Vitreous Silica (Industrial Slag)
igneous
Gneiss (Metamorphic Pebble)
Metamorphic Rock (Quartz-Feldspar-Biotite Gneiss)
metamorphic
Gneiss
Gneiss (foliated metamorphic rock)
metamorphic
Tumbled Amethyst and Smoky Quartz
Silicon Dioxide (SiO2) with impurities
mineral
Sodalite
Sodalite, Na8(Al6Si6O24)Cl2
mineral
Quartz-veined Gneiss
Gneiss with Quartz (SiO2) intrusions
metamorphic
Greenstone
Metabasalt (often contains Chlorite, Actinolite, and Epidote)
metamorphic
Citrine Quartz
SiO2 (Silicon Dioxide with Iron impurities)
mineral
Gneiss (or Granite Gneiss)
Metamorphic rock rich in quartz, feldspar, and biotite/amphibole
metamorphic
Gneiss (with Quartz-Feldspar vein)
Gneiss (high-grade metamorphic rock) containing Quartz (SiO2) and Feldspar (KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8)
metamorphic
Epidote
Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
mineral
Citrine Quartz
Silicon Dioxide (SiO2) with ferric iron impurities
mineral
Gneiss (Metamorphosed Granitic Rock)
Gneiss (composed mainly of quartz, feldspar, biotite, and/or hornblende)
metamorphic
Granitoid Gneiss with Feldspar Vein
Gneiss (High-grade Metamorphic Rock) with Potassium Feldspar (KAlSi3O8)
metamorphic
Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Quartzite Arrowhead (Archaeological Lithic)
Recrystallized Quartz (SiO2)
metamorphic