Garnet (likely Almandine or Pyrope)
Garnet (Group Name), Fe3Al2(SiO4)3 or Mg3Al2(SiO4)3
mineral
Category
Mineral In A Metamorphic
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Garnet
Almandine Garnet (Fe3Al2(SiO4)3)
mineral
Almandine Garnet
Almandine, Fe3Al2(SiO4)3
mineral
Garnet (Almandine variety)
Almandine Garnet (Fe3Al2(SiO4)3)
mineral
Gneiss with Quartz Vein
Metamorphic Gneiss
metamorphic
Gneissic Schist
Gneiss-schist (Metamorphic rock)
metamorphic
Dark metamorphic rock, likely schist or gneiss
Mica schist/gneiss; commonly quartz + feldspar + biotite, with possible amphibole
metamorphic
Garnet Schist
Almandine-Mica Schist
metamorphic
Likely biotite-rich schist or gneiss
Mica schist/gneiss; chiefly quartz, feldspar, and biotite mica
metamorphic
Biotite-rich gneiss
Gneiss, likely quartz–feldspar–biotite gneiss
metamorphic
Rounded granitic gneiss pebble
Granitic gneiss; chiefly quartz, feldspar, and mica
metamorphic
White marble (likely calcitic marble)
Calcite-rich marble; primarily calcium carbonate, CaCO₃
metamorphic
Slate
Slate; fine-grained metamorphosed shale, commonly quartz–illite/chlorite rich
metamorphic
Sapphirine in Matrix
Sapphirine (Mg,Al)8(Al,Si)6O20
mineral
Biotite-rich schist (mica schist)
Mica schist, chiefly quartz + biotite mica; approximate formula for biotite K(Mg,Fe)₃AlSi₃O₁₀(F,OH)₂
metamorphic
Small metallic-looking rock fragment
Uncertain; possibly galena-bearing ore or mica-rich schist
mineral
Likely garnet-bearing metamorphic rock
Garnet amphibolite or garnet-bearing schist; probable almandine garnet (Fe₃Al₂Si₃O₁₂) with amphibole, mica, quartz, and feldspar
metamorphic
Quartz-veined metamorphic rock, likely schist or gneiss
Quartz–feldspar–mica rock; exact identification requires testing
metamorphic
Mica Schist
Mica Schist (predominantly Muscovite/Biotite)
metamorphic
River Stone (Granitic Gneiss)
Foliated Granitic Gneiss
metamorphic
Gneiss (or Granite Gneiss)
Metamorphic rock rich in quartz, feldspar, and biotite/amphibole
metamorphic
Biotite gneiss (probable)
Foliated gneiss composed mainly of quartz, feldspar, and biotite mica
metamorphic
Granitic Gneiss Pebble
Gneiss (felsic metamorphic rock)
metamorphic
Quartz with Inclusions
Silicon Dioxide (SiO2)
mineral
Quartz (Iron-stained Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz (Milky/Snow)
Silicon Dioxide (SiO2)
mineral
Rough amber-colored quartz or calcite fragment
Likely quartz (SiO₂) or calcite (CaCO₃); exact identification requires testing
mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Kyanite
Kyanite (Al2SiO5)
mineral
Quartz (Small Pebble)
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite (Iron Pyrites)
Iron Sulfide (FeS2)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Green Calcite
Calcium Carbonate (CaCO3)
mineral
Milky Quartz
Quartz (SiO2)
mineral
Pyrite with Quartz
Iron Sulfide (FeS2) with Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral