Granite
Granite (Phaneritic Igneous Rock / Quartz, Feldspar, Mica)
Category
Browse man made mineral simulant (glass) specimens identified by the Rock Identifier community.
Granite
Granite (Phaneritic Igneous Rock / Quartz, Feldspar, Mica)
Banded Chert (Jasper)
Silicon Dioxide (SiO2)
Chert (Flint)
Chert (SiO2)
Milky Quartz
Silicon dioxide (SiO2)
Copper and Quartz beads
Native Copper (Cu) and Crystalline Quartz (SiO2)
Green Fluorite
Calcium Fluoride (CaF2)
River Cobble (Quartz-rich Sandstone)
Arenite with iron oxide staining
Quartz Vein in Host Rock (Gneiss/Schist)
Silicon Dioxide (SiO2) within a metamorphic matrix
Black Obsidian
Volcanic Glass (Amorphous Silicon Dioxide)
Milky Quartz
Silicon Dioxide (SiO2)
Chert (Nodule)
Microcrystalline Quartz (SiO2)
Chert (Flint/Jasper variety)
Microcrystalline Quartz (SiO2)
Chert (Banded)
Microcrystalline Quartz (SiO2)
Quartz (Agate/Chalcedony)
Silicon Dioxide (SiO2)
Epidote
Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz (Vein Quartz)
Silicon Dioxide (SiO2)
Red Jasper and Green Aventurine
Silicon dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Fluorite
Calcium Fluoride (CaF2)
Tumbled jasper pebble
Jasper, microcrystalline quartz (SiO₂) with iron-oxide impurities
Muscovite Mica (Granitic Pegmatite)
Muscovite - KAl2(AlSi3O10)(OH)2
Quartz-rich metamorphic rock, likely quartzite
Quartzite (mostly microcrystalline quartz, SiO₂), possibly mica-bearing
Prasiolite (Green Quartz) / Sea Glass Amalgam
SiO2 (Silicon Dioxide)
Snowflake Obsidian
Volcanic Glass with Cristobalite Inclusions (SiO2)
Red Sandstone
Arenite (Ferruginous Sandstone)
Vesicular quartz-rich rock, possibly weathered rhyolite or hydrothermal quartz
Likely quartz (SiO₂) with altered feldspar, iron oxides, and cavities; exact identification requires testing
Quartz (Iron-Stained / Yellow Quartz)
Silicon Dioxide (SiO2)
Celestine (Celestite)
Strontium sulfate (SrSO4)
Quartz pebble
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz Crystal Matrix
Silicon Dioxide (SiO2)
Iron-stained quartz (likely quartzite or quartz-rich rock)
Quartz, silicon dioxide (SiO₂), with iron-oxide staining
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz pebble
Silicon dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
White quartz pebble
Quartz (SiO₂), likely milky quartz
Olivine in Basalt (Peridot)
Magnesium Iron Silicate (Mg, Fe)2SiO4 in Vesicular Basalt
Tumbled pale green aventurine (probable)
Quartz, SiO₂, with dispersed fuchsite or other green inclusions
Clear Quartz (Carved Dragon)
Quartz (Silicon Dioxide, SiO2)