Man Made Object (Metalwork)

Granite (Weathered)

Phaneritic Felsic Igneous Rock

Crystal Quartz Beads (likely Clear Quartz)

Quartz (SiO₂)

Serpentinite

Serpentinite (composed primarily of serpentine group minerals like lizardite, antigorite, and chrysotile)

Limestone

Calcium Carbonate (CaCO3)

Iron-Nickel Meteorite (Possible Chondrite or Oxidized Iron)

Siderite (Nickel-Iron) or Chondrite (Si/Fe composite)

Basalt (Vesicular)

Extrusive mafic igneous rock; primarily (Mg, Fe)2SiO4 (Olivine), CaAl2Si2O8 (Plagioclase Feldspar), and Pyroxene

Quartz Geode Fragment

Silicon Dioxide (SiO2)

Red Jasper

Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions

Rough Green Fluorite

Fluorite (Calcium Fluoride - CaF2)

Pink Satin Spar (Satin Spar Selenite Dyed)

Gypsum (CaSO4·2H2O)

Red Jasper

Silicon Dioxide (SiO2) - Microcrystalline Quartz with iron inclusions

Red Jasper (nodule)

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Calcite

Calcite (CaCO3)

Sandstone

Arenite (primarily SiO2)

Schist

Mica Schist (Quartz-Muscovite-Biotite Schist)

Sandstone (likely Quartzose Sandstone pebble)

Arenite (primarily SiO2)

Sandstone (Ferruginous)

Arenite (variable SiO2 with Fe2O3 staining)

Limestone

Calcium Carbonate (CaCO3)

Serpentine

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

Porphyritic Basalt

Basalt (with plagioclase phenocrysts)

Sandstone

Arenite (primarily SiO2)

Galena

Lead(II) sulfide (PbS)

Green Apophyllite and Stilbite on Quartz Cluster

Apophyllite-(K) (KCa4(Si8O20)(F,OH)·8H2O), Stilbite-Ca (NaCa4(Si27Al9)O72·28H2O), Quartz (SiO2)

Fluorite

Fluorite (Calcium Fluoride - CaF2)

Ferruginous Quartz

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Sandstone (Pebble/Cobble)

Arenite (primarily SiO2)

Botryoidal Chalcedony

Chalcedony (SiO2)

Smoky Quartz

Silicon Dioxide (SiO₂)

Quartz (Common Milky Quartz)

Silicon Dioxide (SiO2)

Porphyritic Basalt (with Lath-like Phenocrysts)

Porphyritic Basalt

Plagioclase Feldspar

Plagioclase Feldspar Series (NaAlSi3O8 - CaAl2Si2O8)

Red Jasper (River Pebble)

Jasper (Silicon Dioxide, SiO2)

Fluorite

Calcium Fluoride (CaF2)

Red Quartzite River Pebble

Quartzite (SiO2 with iron oxide inclusions)

Greenstone

Protolith of basalt, diabase, or gabbro; often contains minerals like chlorite, actinolite, and epidote

River Cobble (Phyllite or Quartzite)

Metasedimentary Rock (often containing SiO2 or KAl2(AlSi3O10)(OH)2)

Marble

Metamorphosed Limestone (calcite formulation CaCO3)

Burmese Jadeite (Water Jade)

Jadeite (NaAlSi2O6)

Sandstone (Red Sandstone)

Clastic Sedimentary Rock (primarily SiO2 with Iron Oxide)

Blue Quartzite (Aventurine variety)

Silicon Dioxide (SiO2) with inclusions of Dumortierite or Magnesio-riebeckite

Fossiliferous Limestone

CaCO3 (principally Calcite or Aragonite)

Fluorite (specifically Rainbow Fluorite or Purple Fluorite)

Calcium Fluoride (CaF2)