Non-geological

N/A - Image does not contain a rock or mineral

Anthropogenic textile material

Texture: soft, woven, fibrous; Color: heather grey; Luster: dull; Material: likely a cotton or polyester blend

Identified March 22, 2026More non-geological →

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Physical properties

Texture: soft, woven, fibrous; Color: heather grey; Luster: dull; Material: likely a cotton or polyester blend

Manufactured via industrial textile processes; not a geological formation

Used for apparel/clothing (specifically a sweatshirt or long-sleeved garment sleeve)

The image provided depicts a person's arm wearing a grey sleeve inside a vehicle, rather than a geological specimen.

Field identification: identify by woven threads and garment stitching; found in retail stores world-wide

Note: Item is not a geological specimen

Homo sapiens (Dermal Appendage: Pilus)

Man-made Jewelry (Metal and Glass/Plastic)

Synthetic Alloy and Amorphous Solid (SiO2/Polymer)

Small fossilized tooth, possibly a shark tooth

Indeterminate fossil tooth; species cannot be identified from this image

Painted River Rock

Polished fluvial clast with acrylic/synthetic pigment coating

Note on Image Identification: Textile

N/A (Anthropogenic material)

Tumbled olive-green stone, possibly serpentine or nephrite jade

Undetermined; likely serpentine (Mg₃Si₂O₅(OH)₄) or nephrite, a tremolite–actinolite amphibole aggregate