Man Made Glass Mineral Simulant

Slag Glass

Amorphous Silica Glass (with metal oxide inclusions)

Tumbled quartz pebble (likely milky quartz)

Quartz, silicon dioxide (SiO₂)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz Pebble with Mineral Inclusions

Silicon Dioxide (SiO2)

Weathered quartz-rich cobble, possibly milky quartz with iron staining

Quartz (SiO₂), likely with iron-oxide/hydroxide coatings and minor host-rock inclusions

Tumbled smoky quartz with iron-stained inclusions

Quartz (SiO₂), likely smoky quartz variety

Quartz (specifically Milky or Clear Quartz)

Silicon Dioxide (SiO2)

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Clear Quartz Sphere

Silicon Dioxide (SiO2)

Smoky Quartz

Silicon Dioxide (SiO₂)

Milky Quartz

Quartz (Silica - SiO2)

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Obsidian

Obsidian (volcanic glass; primarily SiO2)

Chert with Calcite Veins

Silicon Dioxide (SiO2) with Calcium Carbonate (CaCO3) intrusions

Milky Quartz (among River Rock)

Quartz (Silicon Dioxide, SiO2)

Weathered green-gray stone, likely serpentinite or chlorite-rich metamorphic rock

Probable serpentinite (antigorite–lizardite), possibly chlorite schist or altered basalt

Epidosite

Epidosite (Metasomatic rock consisting mainly of Epidote and Quartz)

Milky Quartz with Iron Inclusions

Silicon Dioxide (SiO2)

Quartz Crystal Cluster

Silicon Dioxide (SiO2)

Chert (variant of Flint)

Chert (SiO2)

Celadonite in Amygdaloidal Basalt

K(Mg,Fe2+)(Fe3+,Al)Si4O10(OH)2 (Celadonite mineral) within a Basalt matrix

Muscovite (Mica) in Quartz Matrix

Muscovite (KAl2(AlSi3O10)(OH)2) and Quartz (SiO2)

Unidentified translucent mineral fragment, possibly calcite

Calcite (calcium carbonate, CaCO₃), tentative identification

Fluorite

Calcium Fluoride (CaF2)

Fluorite

Calcium Fluoride (CaF2)

Polished brecciated jasper

Jasper, opaque microcrystalline quartz (SiO₂), likely brecciated jasper with iron-oxide and dark silicate inclusions

Sandstone (with Concretion)

Arenite / Quartzose Sandstone

Smooth river pebble

Indeterminate lithology; likely fine-grained quartz-rich sandstone, siltstone, or weathered chert

Quartz Mineral

Silicon Dioxide (SiO2)

Milky Quartz

Crystalline Silicon Dioxide (SiO2)

Vuggy Quartz on Matrix

Silicon Dioxide (SiO2)

Chalcedony

Silicon Dioxide (SiO2)

Tumbled quartz pebble, likely iron-stained quartz or citrine

Quartz (SiO₂), possibly ferruginous quartz or pale citrine

Clear Quartz

Silicon Dioxide (SiO2)

Sandstone (Ferruginous)

Arenite with Iron Oxide matrix

Quartz

Silicon Dioxide (SiO2)

Quartz (Pink / Ferruginous)

Silicon Dioxide (SiO2)

Yellow Quartz

Silicon Dioxide (SiO2)

Quartz with Mineral Inclusions

Silicon Dioxide (SiO2)

Frosted Green Aventurine

Silicon Dioxide (Quartz with Fuchsite inclusions) - SiO2

Calcite crystal fragment

Calcite (calcium carbonate, CaCO₃)