Unakite
Epidotized Granite
metamorphic
Category
Sedimentary Or Metamorphic Derived
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Unakite (Epidotized Granite)
Unakite (Rock composed of Epidote Ca2(Al,Fe)3(SiO4)3(OH), Orthoclase KAlSi3O8, and Quartz SiO2)
metamorphic
Unakite
Epidotized Granite
metamorphic
Unakite
Unakite epidotized granite
metamorphic
Unakite
Epidotized Granite
metamorphic
Granite Gneiss
Gneiss (Derived from Granite protolith)
metamorphic
Serpentinized ultramafic rock (probable serpentinite)
Serpentinite, dominated by serpentine-group minerals (lizardite/chrysotile/antigorite), with possible magnetite and carbonate
metamorphic
Weathered feldspathic quartzite or granitic rock fragment
Quartz-rich silicate rock; exact identification requires thin-section or chemical testing
metamorphic
Prase quartz with actinolite inclusions
Silicon dioxide (SiO2) with Calcium Magnesium Iron Silicate Hydroxide inclusions
mineral
Jasper (specifically Oolitic or Brecciated Jasper)
Silicon Dioxide (SiO₂)
sedimentary
Yellow Aventurine
Silicon Dioxide (SiO2) with inclusion of Mica
Mineral (Variety of Quartz)
Green Quartzite (Aventurine variety)
Silicon Dioxide (SiO2) with inclusions of Fuchsite
metamorphic
Serpentine
Antigorite/Chrysotile/Lizardite (Mg,Fe)3Si2O5(OH)4
metamorphic
Aquamarine
Beryllium aluminum silicate (Be3Al2Si6O18)
mineral
Carnelian (Chalcedony)
Silicon Dioxide (SiO2) with Iron Oxide impurities
mineral
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide inclusions
mineral
Common Opal (Green Opal)
Hydrated Silicon Dioxide (SiO2·nH2O)
mineral
Chalcedony (Quartz Pebble)
Cryptocrystalline Quartz (SiO2)
mineral
Amazonite
K(AlSi3O8) - Potassium Aluminum Silicate
mineral
Blue Apatite
Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)
mineral
Slate
Slate; fine-grained metamorphosed shale, commonly mica- and chlorite-rich
metamorphic
Aquamarine
Beryl (Be3Al2Si6O18 with iron impurities)
mineral
Blue Apatite
Fluorapatite - Ca5(PO4)3F
mineral
Green Aventurine
Quartz (SiO2) with fuchsite inclusions
mineral
Glauconitic Siltstone / Mudstone
Glauconitic Pelite
sedimentary
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
metamorphic
Muscovite Mica
Muscovite - KAl2(AlSi3O10)(F,OH)2
mineral
Carnelian
Carnelian (Silicon Dioxide, SiO2)
mineral
Yellow Chalcedony (Agate/Carnelian variant)
Silicon Dioxide (SiO₂)
mineral
Schist (with Iron Oxide)
Mica Schist
metamorphic
Rounded volcanic pebble
Likely basaltic-andesite or altered basalt; exact identification requires testing
igneous
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
metamorphic
Green Aventurine
Silicon Dioxide (Quartz) with inclusions of Fuchsite mica (K(Al,Cr)2(AlSi3O10)(OH)2)
metamorphic
White Marble
Recrystallized Calcite (CaCO3)
metamorphic
Schist
Chlorite-Mica Schist
metamorphic
Schist (Biotite/Mica Schist)
Medium-grade regional metamorphic rock (rich in Phyllosilicates)
metamorphic
Schist
Mica Schist (primarily Muscovite and Quartz)
metamorphic
Red Jasper
Silicon Dioxide (SiO2) with Hematite impurities
sedimentary
Red Jasper
Jasper (Silicon Dioxide with Iron Oxide inclusions), SiO2
sedimentary
Red Jasper
Silicon Dioxide with Iron Oxide inclusions (SiO2 + Fe2O3)
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) with goethite/iron oxide inclusions
sedimentary
Red Jasper
Jasper (Silica/Silicon Dioxide, SiO2 plus iron inclusions)
sedimentary