Rock Identifier

Category

Synthetic Polymer (Polylactic Acid)

Browse synthetic polymer (polylactic acid) specimens identified by the Rock Identifier community.

Learn about Synthetic Polymer (Polylactic Acid) in the encyclopedia

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Yttrium Aluminum Garnet

Yttrium Aluminum Garnet

Zincite

Zincite

Opalite

Opalite

Lead Feldspar

Lead Feldspar

Dolomite

Dolomite

Orange Calcite

Orange Calcite

Zircon

Zircon

Quartzite Pebble (Quartzite (primarily SiO2)) — metamorphic

Quartzite Pebble

Quartzite (primarily SiO2)

metamorphic
Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

metamorphic
Turquoise (possible Dyed Howlite or Magnesite imitation) (CuAl6(PO4)4(OH)8·4H2O (Turquoise)) — mineral

Turquoise (possible Dyed Howlite or Magnesite imitation)

CuAl6(PO4)4(OH)8·4H2O (Turquoise)

mineral
Turquoise (Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)) — Mineral

Turquoise

Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)

Mineral
Turquoise (Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)) — mineral

Turquoise

Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)

mineral
Turquoise (likely Stabilized or Dyed Howlite/Magnesite) (Hydrated phosphate of copper and aluminium - CuAl6(PO4)4(OH)8·4H2O) — mineral

Turquoise (likely Stabilized or Dyed Howlite/Magnesite)

Hydrated phosphate of copper and aluminium - CuAl6(PO4)4(OH)8·4H2O

mineral
Turquoise (Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]) — mineral

Turquoise

Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]

mineral
Turquoise (CuAl6(PO4)4(OH)8·4H2O (Hydrated copper and aluminum phosphate)) — mineral

Turquoise

CuAl6(PO4)4(OH)8·4H2O (Hydrated copper and aluminum phosphate)

mineral
Turquoise (Hydrate phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)) — mineral

Turquoise

Hydrate phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)

mineral
Turquoise in Matrix (Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)) — mineral

Turquoise in Matrix

Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)

mineral
Sodalite (Sodalite (Na4Al3Si3O12Cl)) — Mineral

Sodalite

Sodalite (Na4Al3Si3O12Cl)

Mineral
Rutilated Quartz (Quartz (SiO2) with Rutile inclusions (TiO2)) — Mineral

Rutilated Quartz

Quartz (SiO2) with Rutile inclusions (TiO2)

Mineral
Chalk (Calcium Carbonate (CaCO3)) — sedimentary

Chalk

Calcium Carbonate (CaCO3)

sedimentary
Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

sedimentary
Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

igneous
Chert (specifically Jasper or Flint variant) (Silicon Dioxide (SiO2)) — sedimentary

Chert (specifically Jasper or Flint variant)

Silicon Dioxide (SiO2)

sedimentary
Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

metamorphic
Ferruginous Quartz (Iron-stained Quartz (SiO2 with Fe2O3 impurities)) — mineral

Ferruginous Quartz

Iron-stained Quartz (SiO2 with Fe2O3 impurities)

mineral
Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

igneous
Peacock Ore (Bornite (Cu5FeS4)) — mineral

Peacock Ore

Bornite (Cu5FeS4)

mineral
Quartzite River Rock (Quartzite (primarily SiO2)) — metamorphic

Quartzite River Rock

Quartzite (primarily SiO2)

metamorphic
Banded Calcite (often sold as 'Travertine' or 'Mexican Onyx') (Calcium Carbonate (CaCO3)) — sedimentary

Banded Calcite (often sold as 'Travertine' or 'Mexican Onyx')

Calcium Carbonate (CaCO3)

sedimentary
Bornite (Bornite (Cu5FeS4)) — mineral

Bornite

Bornite (Cu5FeS4)

mineral
Quartzite Pebble (Quartzite (primarily SiO2)) — metamorphic

Quartzite Pebble

Quartzite (primarily SiO2)

metamorphic
Banded Onyx (Green Onyx) (Banded Calcite or Travertine (CaCO3)) — Sedimentary

Banded Onyx (Green Onyx)

Banded Calcite or Travertine (CaCO3)

Sedimentary
Native Copper (in coinage alloy) (Copper (Cu)) — mineral

Native Copper (in coinage alloy)

Copper (Cu)

mineral
Yellow Calcite (Calcite (Calcium Carbonate, CaCO3)) — mineral

Yellow Calcite

Calcite (Calcium Carbonate, CaCO3)

mineral
Pink Quartzite (Quartzite (primarily SiO2)) — metamorphic

Pink Quartzite

Quartzite (primarily SiO2)

metamorphic
Yellow Calcite (Calcium Carbonate (CaCO3)) — mineral

Yellow Calcite

Calcium Carbonate (CaCO3)

mineral
Quartzite with Iron Inclusions (Metamorphosed Quartz-rich Rock (SiO2 with Fe2O3)) — metamorphic

Quartzite with Iron Inclusions

Metamorphosed Quartz-rich Rock (SiO2 with Fe2O3)

metamorphic
Quartzite Pebble (Quartzite (SiO2)) — metamorphic

Quartzite Pebble

Quartzite (SiO2)

metamorphic
Pink Granite (Phaneritic plutonic rock (dominated by Alkali Feldspar)) — igneous

Pink Granite

Phaneritic plutonic rock (dominated by Alkali Feldspar)

igneous
Bornite (Bornite (Cu5FeS4)) — mineral

Bornite

Bornite (Cu5FeS4)

mineral
Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

metamorphic
Calcite (Calcium Carbonate (CaCO3)) — mineral

Calcite

Calcium Carbonate (CaCO3)

mineral
Quartzite (Quartzite (composed primarily of SiO2)) — metamorphic

Quartzite

Quartzite (composed primarily of SiO2)

metamorphic
Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

sedimentary
Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

sedimentary
Limestone (River Stone) (Calcium Carbonate (CaCO3)) — sedimentary

Limestone (River Stone)

Calcium Carbonate (CaCO3)

sedimentary
Green Quartzite (Quartzite (SiO2 with inclusions)) — metamorphic

Green Quartzite

Quartzite (SiO2 with inclusions)

metamorphic
Quartzite Pebble (Metamorphosed Quartz Sandstone (SiO2)) — metamorphic

Quartzite Pebble

Metamorphosed Quartz Sandstone (SiO2)

metamorphic
Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

sedimentary