Los Lamentos Mountains (Ahumada mine area)
30.5742° N, 105.8186° W · ± 10 km
Vanadinite from Chihuahua, Mexico, with photos of specimens from this locality.
Minerals found here
On the same specimen
1 specimen photo(s) from this locality show vanadinite with calcite together. The pairing comes from the photographer's file name and label, so the relationship between the two minerals is not specified.
1 specimen photo(s) from this locality show vanadinite with quartz together. The pairing comes from the photographer's file name and label, so the relationship between the two minerals is not specified.
Vanadinite at Los Lamentos Mountains (Ahumada mine area)
Vanadinite occurring together with descloizite, often as overgrowths on or replacements of wulfenite, in an oxidized limestone manto; an arsenic-bearing variety is listed.
Photo: Robert M. Lavinsky · CC BY-SA 3.0 · Source
Photo: Robert M. Lavinsky · CC BY-SA 3.0 · Source
Photo: Robert M. Lavinsky · CC BY-SA 3.0 · Source
- Formula
- Pb₅(VO₄)₃Cl
- Associated minerals
- Wulfenitedescloiziteanglesitecerussitehydrozincitewillemitegypsum
- Surface features
- Vanadinite and descloizite often overgrow or pseudomorph wulfenite between the 500- and 650-foot levels
- History
- Specimen mining mainly from the 1920s to the early 1960s, with smaller recoveries in 1968, 1976 and the early 1980s.
Geology of the locality
- Setting
- Oxidized manto of galena-sphalerite ore in a shallowly dipping reef bed, now largely anglesite, cerussite, hydrozincite and willemite, with abundant gypsum and native sulfur.
- Type
- Hydrothermal, Oxidation zone
- Host rock
- Limestone (equivalent of the Lower Cretaceous Finlay Formation)
- Region
- Chihuahua
- Country
- Mexico
Coordinates from Mindat locality page for the mountain range, converted from degrees-minutes-seconds (SRC-074); the mine itself is not separately located. Mine worked from the surface to the 700-foot level; specimen mining reportedly ended in the early 1980s after flooding.
Sources: SRC-074
Sources
- SRC-074 · Database
Los Lamentos Mts, Ahumada Municipality, Chihuahua, MexicoMindat.org contributors · Mindat.org - SRC-067 · Book
Handbook of Mineralogy - VanadiniteAnthony, J.W.; Bideaux, R.A.; Bladh, K.W.; Nichols, M.C. · Mineralogical Society of America
Draft data from the Provenite workbook. Check entries against the cited sources before relying on them. Photos are open-licence images from Wikimedia Commons; the author and licence are given with each photo.