Sedimentary Or Igneous Associated Mineral

Green Porphyry (Flowerstone)

Porphyritic Andesite or Basalt

Obsidian

Obsidian (Volcanic Glass, SiO2 + impurities)

Porphyritic Basalt

Porphyritic Basalt (with Plagioclase phenocrysts)

Red Jasper

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Dalmatian Stone

Peralkaline rhyolite with arfvedsonite inclusions

Gneiss

Gneiss (High-grade metamorphic rock)

Granitic Gneiss

Gneiss (quartz-feldspar-mica complex)

Magnetite (Loadstone candidate)

Iron(II,III) oxide (Fe3O4)

Gneiss

Metamorphic Gneiss

Pyrite

Iron Sulfide (FeS2)

Serpentinite

Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4

Milky Quartz

Silicon Dioxide (SiO2)

Quartz Crystal Fragment

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz (Milky/Clear variety)

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Banded Chert (River Cobble)

Microcrystalline Quartz (SiO2)

Basalt

Basalt

Lepidolite

K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2

Lepidolite

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)

Lepidolite

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)

Lepidolite

Lepidolite (K(Li,Al)3(Al,Si)4O10(F,OH)2)

Rhodonite

Manganese silicate: (Mn,Fe,Mg,Ca)SiO3

Prehnite with Epidote inclusions

Ca2Al(AlSi3O10)(OH)2

Gold Ore

Gold-bearing Quartz (Native Gold, Au)

Quartz

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Crystalline Silicon Dioxide (SiO2)

Mica / Muscovite or Biotite

Phyllosilicate mineral group (e.g., KAl2(AlSi3O10)(OH)2)

Red Sandstone (Siltstone/Mudstone variety)

Ferruginous Sandstone (composed primarily of Quartz with Hematite cementation)

Rutilated Quartz

SiO2 with TiO2 inclusions (Rutile)

Clear Quartz (Rock Crystal) Bracelet

Silicon Dioxide (SiO2)

Yellow Jasper

Silicon Dioxide (SiO2) with Goethite or Limonite inclusions

Red Jasper

Silicon dioxide with iron impurities (SiO2)

Garnet (likely Pyrope or Almandine)

Garnet Group (complex nesosilicate minerals, e.g., Pyrope Mg3Al2(SiO4)3, Almandine Fe3Al2(SiO4)3, Spessartine Mn3Al2(SiO4)3, Grossular Ca3Al2(SiO4)3, Andradite Ca3Fe2(SiO4)3, Uvarovite Ca3Cr2(SiO4)3). The vivid red color in the image strongly suggests Pyrope or Almandine.

Quartz pebble

Silicon dioxide (SiO2)

Magnetite (Iron Ore)

Magnetite (Fe3O4)

Gneiss

Gneiss (High-grade metamorphic rock)

Quartz

Silicon Dioxide (SiO2)

Gneiss

Gneiss (Metamorphic high-grade)

Quartz with Iron Oxide

SiO2