Synthetic Glass (Often Categorized As A Simulated Mineral)

Browse synthetic glass (often categorized as a simulated mineral) specimens identified by the Rock Identifier community.

Green Sea Glass

Amorphous Silica (man-made glass), SiO2 + additive metal oxides

mineraloid / anthropogenic (man-made origin)

Chert (Flint)

Silicon Dioxide (SiO2)

sedimentary

Carved Mottled Greenish-Yellow Crystal/Glass Object

Unknown; possibly a form of quartz (chalcedony/jadeite/nephrite) or glass/resin.

Man-made Object/Uncertain Mineral

Jasper

Jasper (Silicon Dioxide, SiO2)

sedimentary

Chert (Jasper focus)

Silicon dioxide (SiO2) - Microcrystalline Quartz

sedimentary

Chert (Fossiliferous)

Silicon dioxide (SiO2)

sedimentary

Chert (Iron-stained)

Microcrystalline Quartz (SiO2)

sedimentary

Black Jasper

Jasper (Silicon Dioxide, SiO2)

sedimentary

Chert (Nodule)

Chert (Silicon Dioxide, SiO2)

sedimentary

Green Quartzite (Aventurine-like)

Quartzite (primarily SiO2 with trace Fuchsite mica inclusions)

metamorphic

Black Tourmaline

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

mineral

Quartzite Cobble

Quartzite (primarily SiO2)

metamorphic

Chert (Agatized Chert)

Microcrystalline Quartz (SiO2)

sedimentary

Mica Group Minerals

There isn't a single scientific name as 'Mica' refers to a group of phyllosilicate minerals. Common scientific names include Muscovite (KAl₂ (AlSi₃O₁₀)(OH)₂), Biotite (K(Mg,Fe)₃AlSi₃O₁₀(OH)₂), Phlogopite (KMg₃AlSi₃O₁₀(OH)₂), and Lepidolite (K(Li,Al)₃(Al,Si,Rb)₄O₁₀(F,OH)₂).

Mineral