Antropogenic (Man Made Material)

Aventurine

Aventurine Quartz (SiO2 with inclusions)

Quartzite

Quartzite (primarily SiO2)

Granite

Granite (a plutonic igneous rock)

Banded Jasper (Chert)

Silicon Dioxide (SiO2) - variety of Chalcedony

Rutilated Quartz

SiO2 (Quartz) with TiO2 (Rutile inclusions)

Serpentinite (Serpentine Rock)

Serpentinite is a rock composed of one or more serpentine group minerals, chiefly antigorite, chrysotile, and lizardite, with the general formula (Mg,Fe)3Si2O5(OH)4. Often includes other minerals like magnetite, talc, and chromite.

Chert (Flint)

Chert (predominantly SiO₂ - silicon dioxide)

Quartz (River Pebble)

Quartz (SiO₂ - Silicon Dioxide)

Pebble (likely Quartzite or Chert)

Clastic Sediment, potentially composed of SiO₂ (Quartz)

Quartz

Quartz (Silicon Dioxide - SiO2)

Muscovite Mica

Muscovite (KAl₂(AlSi₃O₁₀)(F,OH)₂))

Quartz (possibly milky quartz)

Quartz (Silica; SiO₂)

Calcite

Calcite (CaCO3)

Gneiss

Gneiss (a rock type, not a specific mineral with a formula)

Quartzite

Quartzite

Dolomite

Dolomite (CaMg(CO3)2)

Calcite

Calcite (Calcium Carbonate, CaCO3)

Red Jasper (beads)

Silicon Dioxide (SiO2) with iron inclusions

Sunstone and Green Aventurine

Sunstone: (Ca,Na)[(Al,Si)2Si2O8] (Plagioclase Feldspar Group); Green Aventurine: SiO2 (Quartz)

Granite

Granite (a plutonic igneous rock composed of quartz, feldspar, and mica)

Sodalite

Sodalite (Na4Al3Si3O12Cl)

Magnetic Hematite

Magnetized Hematite (an iron oxide mineral, Fe2O3, that has undergone magnetization)

Green Aventurine and Clear Quartz

Green Aventurine (Silicon Dioxide - SiO2 with Fuchsite inclusions); Clear Quartz (Silicon Dioxide - SiO2)

Hematite

Hematite (Fe2O3)

Serpentinite (Serpentine Rock)

Primarily composed of serpentine group minerals, such as antigorite, chrysotile, and lizardite. Chemical formula for serpentine minerals is (Mg,Fe)3Si2O5(OH)4.

Quartz (Druzy) in host rock

SiO₂ (Silicon Dioxide) as Quartz, with unspecified host rock components (likely silicates and iron oxides)

Shale with Vein Infillings

Shale (a fine-grained clastic sedimentary rock). The veins could be Calcite (CaCO3), Quartz (SiO2), or other minerals.

Botryoidal Chalcedony with Calcite

Chalcedony (SiO2 with accessory minerals, likely CaCO3)

Blue Chalcedony and Picture Jasper Beads

Blue Chalcedony (SiO2), Picture Jasper (SiO2)

Quartz (in a rock matrix)

Quartz (SiO2)

Sandstone

Sandstone (arenite is a more specific geological term for a clean sandstone, while wacke refers to a dirty sandstone with significant matrix)

Jasper (likely a variety of Brecciated Jasper or a patterned variety)

Silicon dioxide (SiO2)

Conglomerate

Conglomerate

Greisen

Greisen

Black Tourmaline (Schorl)

Schorl (Na(Fe²⁺)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)

Calcite

Calcite (Mineral; CaCO₃)

River Cobble (likely Sandstone or Siltstone type)

Sandstone or Siltstone (common rock types that form river cobbles)

Amber

Succinite (fossilized tree resin)

Conglomerate

Conglomerate

Banded Gneiss

Gneiss (pronounced 'nice')

Muscovite Mica

Muscovite (KAl2(AlSi3O10)(OH)2)

Fluorite (likely)

Calcium Fluoride (CaF2)