The Field Guide · FN-0014
Sand From a Blackwater Beach
- Status
- Sample, held.
- Place
- Nanay River, Loreto
- First observed
- 2026-02-11
- Last revised
- 2026-02-11
Almost pure quartz, nearly white, because the tannic water carries no silt to stain it. The colour of a beach is a report on the chemistry of the river that made it.
Provenance and method
Research methods
- Field observation
- Material or kitchen testing
Sources
- 1Field observationOne sample, held in the study. No laboratory analysis performed.
Revision history and errata
0 recorded revisions
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- First published
- 2026-02-13
- Last revised
- Not yet revised
No revisions since publication. When there is one, it will appear here with its date.