Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
Category
Browse sedimentary or igneous associated mineral specimens identified by the Rock Identifier community.
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
Cullet (Slag Glass)
Amorphous Silica (SiO2) with various metal oxide colorants
Bloodstone (also known as Heliotrope)
Silicon Dioxide (SiO2) - variety of Chalcedony
Greenstone / Serpentinite
Serpentinite (composed largely of Serpentine group minerals, Mg3Si2O5(OH)4)
Graphite
Graphite (Chemical Formula: C)
Slate
Slate (Foliated metamorphic rock)
Gneiss (River Cobble)
Gneiss (Foliated Metamorphic Rock)
Milky Quartz
Silicon dioxide (SiO2)
Quartz Druze on Matrix (Geode Fragment)
Quartz (Silicon Dioxide, SiO2)
Carnelian
Carnelian (Cryptocrystalline Quartz, SiO2)
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Carnelian
Carnelian (SiO2, Silicon Dioxide with Iron Oxide impurities)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Chrysocolla Chalcedony
Hydrated Copper Phyllosilicate (Cu,Al)2H2Si2O5(OH)4 + SiO2
Gold and Silver (Metal Components of an Antique Pocket Watch)
Native Gold (Au) and Native Silver (Ag)
Charoite
K(Ca,Na)2Si4O10(OH,F)·H2O
Gneiss
Gneiss
Banded Agate (specifically Lake Superior Agate style)
Agate (Cryptocrystalline Quartz), SiO2
Quartz
Silicon Dioxide (SiO₂)
Hematite
Iron(III) oxide (Fe2O3)
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Gold Nugget
Native Gold (Au)
Rhodonite
Rhodonite (MnSiO3)
Pink Fluorite
Fluorite (Calcium Fluoride) - CaF2
Banded Gneiss
Gneiss (High-grade regional metamorphic rock)
Staurolite (Fairy Cross)
Staurolite (Fe2+2Al9Si4O23(OH))
Malachite
Malachite [Cu2CO3(OH)2]
Gneiss (Metamorphic Cobble)
Gneiss
Black Tourmaline (Schorl)
Schorl (Na(Fe^2+)3Al6(Si6O18)(BO3)3(OH)4)
Banded Agate (with small Geode cavity)
Silicon Dioxide (SiO2) - Chalcedony variety
Milky Quartz
Quartz (Silica / Silicon Dioxide), SiO2
Milky Quartz
Quartz (Silica / Silicon Dioxide, SiO2)
Smoky Quartz and Chalcedony Geode Fragment
Silicon Dioxide (SiO2)
Banded Chalcedony (Agate)
Chalcedony (SiO2) - Cryptocrystalline Quartz
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Quartzite
Quartzite (primarily SiO2)
Gneiss
Gneissic Metamorphic Rock
Chert (or Flint)
Silicon dioxide (SiO2)
Nephrite Jade / Greenstone
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)
Gneiss
Foliated Metamorphic Rock (Gneiss)
Gneiss (Metamorphic Rock)
Gneiss