Organic Mineraloid And Mineral

Amber (Rough)

Amber (Fossilized Tree Resin, succinite)

Moss Agate

Cryptocrystalline Quartz (SiO2 with Manganese or Iron Oxide inclusions)

Pyrite

Iron Sulfide (FeS2)

Petrified Wood

Silicified Wood (SiO2)

Petrified Wood

Silicified Wood (primarily Quartz/SiO2)

Chalcopyrite

CuFeS2

Turquoise and Red Coral

Turquoise: CuAl6(PO4)4(OH)8·4H2O; Red Coral: Corallium rubrum (organic gemstone)

Chert

Chert (Microcrystalline Quartz, SiO2)

Moss Agate

Silicon Dioxide (SiO2) with inclusions

Moss Agate

Chalcedony (Silicon Dioxide) with dendritic inclusions (SiO2)

Fossil Coral

Scleractinia (Fossilized Coral) / Calcium Carbonate (CaCO3) or Silica (SiO2)

Petrified Wood

Silicified Wood (primarily SiO2)

Concrete or asphalt-like aggregate surface with a dark fragment

Uncertain; likely artificial concrete containing mixed lithic aggregate, not a natural rock

Fossilized Shark Tooth

Elasmobranchii gen. sp. indet. (Calcium Phosphate - Ca5(PO4)3(OH,F,Cl))

Petrified Wood

Silicified Wood (SiO2)

Sandstone

Arenicola (comprising mostly Quartz, SiO2)

Coprolite

Fossilized Feces

Banded sandstone pebble

Lithified quartz–feldspar sandstone, likely ferruginous and carbonaceous laminae

Fossil bivalve shell

Likely an extinct or modern-like ribbed cockle/scallop; exact genus requires locality and diagnostic hinge features

Dyed Agate (Tumbled)

Silicon Dioxide (Chalcedony variety, artificially dyed)

Quartz pebble or seed/crumb

SiO2 (if quartz)

Petrified Wood

Silicified wood (primarily quartz, SiO2)

Fossil Shark Tooth

Carcharadon sp. (likely Carcharodon carcharias or similar Lamniformes)

Green Sandstone

Glauconitic Sandstone

Moss Agate

Silicon dioxide (SiO2) with inclusions

Seashell Fossil

Gastropoda fossil

Petrified Wood

Silicified Wood (primarily SiO2)

Sandstone

Arenite (SiO2 predominantly)

Petrified Wood

Silicified Wood (SiO2)

Shark Tooth Fossil

Carcharodonta (order Lamniformes), likely Carcharias spp.

Chert (White Chert / Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Nodule)

Silicon Dioxide (SiO2)

Calligraphy Stone

Fossiliferous Limestone (containing Hematite and Shells)

Petrified Wood

Silicified Wood (primarily SiO2)

Jasper

Silicon dioxide (SiO2)

Petrified Wood

Silicified Wood (primarily SiO2)

Petrified Wood

Silicified Wood (primarily SiO2)

Chert (often called Flint)

Microcrystalline to cryptocrystalline quartz (SiO2)

Fossil Shark Tooth

Chondrichthyes (class)

Fossilized Shark Tooth

Lamniformes (order) fossil

Petrified Wood

Silicified wood (principally SiO2)

Shark Tooth Fossil

Elasmobranchii fossil (likely Carcharias or Odontaspis sp.)