Lila C (Furnace Creek)
California, Inyo County, Furnace Creek borate district (east of Death Valley), United States
OtherB
- Type
- Lacustrine borates (non-zoned), Furnace Creek Formation
Borate deposit of the Furnace Creek Formation (Miocene-Pliocene, extensional Basin and Range basin, over 600 km² between the Funeral and Black Mountains); about thirty borate lenses in calcareous lacustrine sediments, some zoned (probertite or ulexite core surrounded by colemanite), others colemanite-only. Swihart et al. (2014): probertite near +5 ‰, colemanite mostly near -1 ‰, the heavier boron of the Na-Ca core reflecting the ancestral lake and its springs, the lighter colemanite the alteration of Na-Ca borates by downward-migrating lake water. Colemanite-only mine; small late crystals much lighter. Coordinates not published (district map only).
δ11B in ‰ (per mil) Values of the same system
Standard : NIST SRM 951
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −1.1 ± 0.2 ‰ | −1.3 / −1 ‰ | 3 | colemanite Mean and standard deviation recalculated from 3 analyses, -1.3 to -1.0 (1A1 -1.3; 1A1 répétition -1.0; 2 stock -1.0). | Swihart et al. (2014), A boron isotope study of the Furnace Creek, California, borate dis… |
| −12.6 ‰ | 1 | late small colemanite crystals Single analysis (1A2). | Swihart et al. (2014), A boron isotope study of the Furnace Creek, California, borate dis… |
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Cite this page
IsoFind Atlas (2026). Lila C (Furnace Creek), isotope signatures. https://www.isofind.tech/isotopes/en/deposits/lila-c-furnace-creek/ (accessed 2026-10-19).
@misc{isofind2026lilacfurnacecreekisotopesigna,
title = {Lila C (Furnace Creek), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/lila-c-furnace-creek/},
note = {Accessed 2026-10-19}
}Updated : 2026-10-19