Source

What is the difference between a rock and a mineral?

U.S. Geological Survey (n.d.). What is the difference between a rock and a mineral?. https://www.usgs.gov/faqs/what-difference-between-rock-and-mineral Retrieved 2026-09-06.

Authority tier: Primary authority
Type: webPage
URL: https://www.usgs.gov/faqs/what-difference-between-rock-and-mineral
Licence: Public domain (work of the U.S. Government)
Retrieved by Lithoen: 2026-09-06
Last re-checked: 2026-09-06 (verified)

Known metadata gaps

Recorded explicitly rather than guessed.

publishedYear: the USGS FAQ page displays no publication or last-revised date.
Lineage unresolved. This is explanatory writing that restates findings published elsewhere, and it names no sources Lithoen could follow. Every claim resting on it therefore has an unresolved evidentiary origin, and independence between it and any other source is UNKNOWN.