Feldspar
Aluminosilicate (KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8)
mineral
Category
Metamorphic And Igneous Rocks
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Magnetite
Fe3O4 (Iron(II,III) oxide)
mineral
Milky quartz
Quartz (silicon dioxide, SiO₂)
mineral
Sunstone
Feldspar group (Oligoclase)
gemstone
Topaz
Al2SiO4(F,OH)2
mineral
Small brown mineral fragment, possibly garnet
Unidentified; garnet is a tentative visual possibility (garnet-group silicates, X₃Y₂(SiO₄)₃)
mineral
Magnetite / Iron-Rich Basalt
Magnetite bearing Mafic Rock (Fe3O4)
igneous
Magnetite or Hematite Nodule
Iron Oxide (Fe3O4 or Fe2O3)
mineral
Rainbow Moonstone
White Labradorite (Feldspar variety)
mineral
K-Feldspar (Potassium Feldspar)
Potassium Feldspar (Microcline or Orthoclase), KAlSi3O8
mineral
Potassium Feldspar (Orthoclase / Microcline)
KAlSi3O8
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Garnet
Pyrope or Almandine (X3Y2(SiO4)3)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Potassium Feldspar
Orthoclase (KAlSi3O8)
mineral
Citrine
Silicon Dioxide (Quartz), SiO2
mineral
Blue gemstone, likely iolite or blue sapphire
Iolite (cordierite, Mg₂Al₄Si₅O₁₈) or corundum (sapphire, Al₂O₃)
gemstone
Yellow Quartz
Silicon Dioxide (SiO2)
mineral
Sunstone
Plagioclase Feldspar (Sodium Calcium Aluminum Silicate)
gemstone
Black Tourmaline
Schorl (NaFe2+3Al6(BO3)3Si6O18(OH)4)
mineral
Sunstone
Feldspar group (Oligoclase / Labradorite)
gemstone
Chalcopyrite (Peacock Ore)
Chalcopyrite (CuFeS2)
mineral
Hypersthene
Enstatite-Ferrosilite series, (Mg,Fe)2Si2O6
mineral
Feldspar (specifically Orthoclase)
Potassium Aluminum Silicate (KAlSi3O8)
mineral
Epidote
Ca2(Al,Fe)3(SiO4)3(OH)
mineral
Magnetite
Iron(II,III) oxide (Fe3O4)
mineral
Epidote
Epidote ({Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH))
mineral
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral
Sapphire (Rough)
Corundum (Al2O3)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Sodalite
Sodalite (Na8Al6Si6O24Cl2)
mineral
Quartz Crystal Cluster (with Selenite Satin Spar)
Silicon Dioxide (SiO2)
mineral
Ptygmatic Migmatite
Migmatite (consisting of Neosome and Paleosome fractions)
metamorphic
Corundum (Sapphire/Ruby in Matrix)
Aluminium oxide (Al2O3)
mineral
Garnet (Almandine/Pyrope series)
Garnet Group - X3Y2(SiO4)3
mineral
Schist
Metamorphic Rock (Schist)
metamorphic
Magnetite
Magnetite (Fe3O4)
mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Citrine
Silicon Dioxide (SiO2)
mineral
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(F,OH)2)
mineral
Quartz with Muscovite Mica
Silicon Dioxide (SiO2) with Potassium Aluminum Silicate Hydroxide Fluoride (KAl2(AlSi3O10)(F,OH)2)
mineral
Rock and Mineral Collection
Mixed Geological Specimens
mineral