ROCK OBSERVATION NOTES — YENRA
Guide: https://yenra.com/rocks-minerals/
Version: October 12, 2026

Use one copy per specimen or site. Photographing a rock in place is enough.
Check site rules and permission before collecting or testing. Begin with
observations of existing surfaces; this sheet requires no destructive tests.
Keep sensitive or private locations out of public posts.

Observation ID:
Observer / date:
Locality and geological setting:
Attached to bedrock, loose, or imported material? Explain:
Was it left in place? If collected, record permission / applicable rules:
Photograph filenames (whole object, scale, close view, surroundings):
Scale shown and units:
Approximate specimen dimensions (mm or cm; state units):
Visible grain-size range (mm), or too fine to distinguish:
Visible components (describe color, shape, luster; name only if supported):
Grain arrangement (interlocking, rounded, aligned, or uncertain):
Layers, bands, veins, pores, fossils, or other features:
Surface condition and weathering:
Other observed properties and how observed:

INTERPRETATION — KEEP SEPARATE FROM OBSERVATIONS
Broad description:
Candidate rock or mineral name:
Evidence supporting that candidate:
Other plausible candidates:
Confidence and reason (e.g. provisional; feldspar identity unconfirmed):
Most useful next observation or expert question:
Reference or geological map used (title, URL, date, scale if applicable):

Before sharing: include the ID, context, scale, several clear photos and
your observations. Say what remains uncertain. Keep the original notes
when an identification changes, and record the reason for the revision.

Background references:
USGS, Collecting Rocks: https://pubs.usgs.gov/gip/collect1/collectgip.html
NPS, Minerals: https://www.nps.gov/subjects/geology/minerals.htm
NPS, collecting rules: https://www.nps.gov/subjects/geology/permits.htm