Man Made Material (Constructed)

Sandstone

Arenite (SiO2 primarily)

Jasper

Jasper (Silicon Dioxide, SiO2)

Picture Jasper

Silicon Dioxide (SiO2) with impurities

Charoite

Charoite - K(Ca,Na)2Si4O10(OH,F)·H2O

Quartzite

Metamorphosed Quartz Sandstone (SiO2)

Sandstone (with potential fossil inclusions)

Clastic sedimentary rock (primarily SiO2)

Chert (Yellow Jasper variant)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Sandstone (likely Red/Brown Sandstone)

Arenite (SiO2 based)

Basalt

Africite (Mafic Igneous Rock)

Sandstone (likely Arkosic or Lithic Sandstone)

Clastic Sedimentary Rock (SiO2 with assorted minerals)

Sandstone with Algae Growth

Arenite with Chlorophyta/Lichen

Sandstone (Quartz Arenite)

Sandstone (SiO2 with possible mineral cements)

Gneiss (Metamorphic Rock)

Gneiss

Chert (specifically Pink/Tan Chert)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Olivine (Peridot)

Olivine Group (Magnesium Iron Silicate), (Mg, Fe)2SiO4

Sandstone (likely Quartzose Sandstone)

Arenite (primarily SiO2)

Jasper with Manganese Dendrites

Silicon Dioxide (SiO2) with Oxide Mineral Inclusions

Coquina

Coquina Limestone

Sandstone (with Iron Staining)

Clastic sedimentary rock (High Silica / Iron Oxide)

Sandstone (Ferruginous)

Arenite with Iron Oxides

Milky Quartz

Silicon Dioxide (SiO2)

Sandstone

Arenite (primarily SiO2)

Basalt

Extrusive mafic igneous rock

Puddingstone (Gowganda Tillite/Jasper Conglomerate)

Jasper Conglomerate (SiO2 primary composition)

Diorite (Salt and Pepper Rock)

Diorite (comprising Plagioclase Feldspar, Hornblende, and Biotite)

Sandstone

Clastic Sedimentary Rock (composed primarily of Quartz: SiO2)

Quartzite (or Milky Quartz pebble)

Quartzite (Metamorphosed Sandstone) / Silicon Dioxide (SiO2)

River Jasper (Chert/Chalcedony mix)

Silicon Dioxide (SiO2) with iron oxide and chlorite inclusions

Sandstone (likely Graywacke or Arkose variant)

Clastic Sedimentary Rock (SiO2 based)

Sandstone (likely Greywacke or Lithic Sandstone)

Arenite / Wacke

Chert (specifically Yellow Jasper/Flint)

Microcrystalline Quartz (SiO2)

Granite (with alteration)

Granite (Felsic intrusive igneous rock)

Red Jasper

Silicon dioxide (SiO2) with iron inclusions

Sandstone (likely Arkosic)

Clastic Sedimentary Rock (primarily SiO2 with Feldspar)

Chert with Quartz Veining

Silicon Dioxide (SiO2)

Amazonite

Amazonite (KAlSi3O8, a triclinic variety of Potassium Feldspar)

Ferruginous Quartz

Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions

Sandstone (with Lichen)

Arenite (primarily SiO2)

Quartzite Breccia

Brecciated Quartzite (SiO2)

Quartzite Pebble

Quartzite (primarily SiO2)

Rhodonite Tumbled Chips

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

Wishing Stone (Sandstone with Quartz Vein)

Arenite with Quartzite intrusion (SiO₂)