Yellow Ochre / Limonite
Limonite (FeO(OH)·nH2O)
Mineral
Category
Metal (Elemental Mineral)
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Iron-oxide-rich weathered rock
Limonite/goethite-bearing ironstone; chiefly hydrated iron oxides, often FeO(OH)·nH₂O
mineral
Aventurine
Quartz (SiO2) with inclusions of Fuchsite
mineral
Lepidolite in Quartz (Lithium-bearing Ore)
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2) and Quartz (SiO2)
igneous/mineral
N/A - Man-made object (Jewelry Chain)
Antiqued or Oxidized Metal Chain (often Steel or Brass)
Mineral (processed metal)
Granite
Granite (felsic intrusive igneous rock)
igneous
Granite
Felsic intrusive igneous rock
igneous
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz with Iron Oxide Weathering
Silicon Dioxide (SiO2) with Goethite/Limonite coatings
mineral
Blue-green crystal point, likely fluorite
Fluorite (CaF₂), tentative visual identification
mineral
Chalcopyrite-bearing Ore
Chalcopyrite (CuFeS2)
mineral
Beryl (Variety: Aquamarine)
Beryllium Aluminum Cyclosilicate (Be3Al2Si6O18)
mineral
Beryl (var. Heliodor or Aquamarine)
Beryllium Aluminum Cyclosilicate (Be3Al2Si6O18)
mineral
Celestine (Celestite)
Strontium sulfate (SrSO4)
mineral
Dark metallic sulfide specimen, possibly galena
Galena (lead sulfide, PbS), identification tentative
mineral
Granite
Intrusive Igneous Rock
igneous
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Pegmatitic granite (likely feldspar–quartz–mica rock)
Coarse-grained granitic pegmatite; primarily quartz (SiO₂), feldspar, and mica, with possible epidote or chlorite
igneous
Feldspar-Quartz Rock (likely Pegmatite or Granite)
Feldspar-Quartz composite rock (KAlSi3O8 - SiO2)
igneous
Chalcopyrite (Peacock Ore)
Copper Iron Sulfide (CuFeS2)
mineral
Copper Ore
Mixed copper sulfides/oxides in gangue matrix
mineral
Lepidolite
K(Li,Al)3(Al,Si,3O10)(F,OH)2
mineral
Pyrite in Quartz
FeS2 (Iron Pyrite) with SiO2 (Quartz)
Mineral/Igneous/Hydrothermal
Copper Ore (with Azurite and Malachite)
Cuprite, Azurite (Cu3(CO3)2(OH)2), Malachite (Cu2(CO3)(OH)2)
mineral
Turquoise cabochon ring
Turquoise, hydrated copper–aluminum phosphate: CuAl₆(PO₄)₄(OH)₈·4H₂O
gemstone
Granite
Felsic intrusive igneous rock
igneous
Granite
Intrusive igneous rock primarily composed of quartz, alkali feldspar, and plagioclase
igneous
Opalite
Synthetic Opalized Glass
gemstone
Gold in Quartz Matrix
Native Gold (Au) with Quartz (SiO2) and Slate/Shale
mineral
Sunstone
Oligoclase (Plagioclase Feldspar), (Ca,Na)(Al,Si)4O8
mineral
Galena
Lead(II) sulfide (PbS)
mineral
Cobalt Blue Glass / Cullet Glass
Silicon dioxide (Amorphous man-made glass)
mineral
Gold Nugget
Native Gold (Au)
mineral
Quartz Vein / Milky Quartz
Silicon Dioxide (SiO2)
mineral
Native bismuth
Bismuth (Bi), commonly forming hopper crystals or aggregates
mineral
Granite
Felsic intrusive igneous rock
igneous
Amygdaloidal Basalt
Basalt with secondary mineral infilling
igneous
Granite
Intrusive igneous rock
igneous
Rounded river pebble, possibly iron-rich quartzite or basalt
Indeterminate from image; likely fine-grained basalt (mafic silicate rock) or ferruginous quartzite
igneous
Iron-stained Quartz (Gossan/Limonite-coated Quartz)
Silicon Dioxide (SiO2) with Hydrated Iron Oxides (FeO(OH)·nH2O)
mineral
Quartz Vein Rock
Quartz (Silicon Dioxide, SiO2)
igneous