ALMOST THERE!. Help us with a final push needed to keep mindat.org running. Click here to help.
Catawiki are hosting a mindat.org benefit auction. All proceeds to mindat.org! BID NOW
Log InRegister
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat Articles
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsThe ElementsUsersBooks & MagazinesMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Los Lamentos Mts (Sierra de Los Lamentos), Mun. de Ahumada, Chihuahua, Mexicoi
Regional Level Types
Los Lamentos Mts (Sierra de Los Lamentos)Mountain Range
Mun. de AhumadaMunicipality
Chihuahua- not defined -
MexicoCountry

This page is currently not sponsored. Click here to sponsor this page.
Key
Lock Map
Latitude & Longitude (WGS84): 30° 34' 28'' North , 105° 49' 8'' West
Latitude & Longitude (decimal): 30.57438,-105.81886
GeoHash:G#: 9tkvbjch9
Locality type:Mountain Range
Köppen climate type:BSk : Cold semi-arid (steppe) climate


The Sierra de Los Lamentos takes its name from the eerie shrieking and moaning sounds (lamentations) the wind makes passing through a series of vertical cracks at the crest of the range above the mine.

Geologically, the Los Lamentos deposit consists of a single manto averaging 15m (50') high, 20-30m (65-100') wide and 1500m (5000') long (down dip). The manto is hosted in a single shallowly-dipping reefal bed in the equivalent of the Lower Cretaceous Finlay Formation. Manto mineralization consisted of massive galena and sphalerite (now oxidized to anglesite and cerussite and hydrozincite and willemite) with abundant gypsum and native sulfur. Most of the zinc minerals occur as vein fillings in limestone beneath the manto, reflecting their leaching, transport and supergene redeposition from the manto. (The zinc ores have never been produced) The manto was mined from the surface to the 700' level, but high-grade oxide ores are known to continue at least to the 800 level. Mining of these lower ores reportedly was not accomplished because of water inflow problems. 1920's pumping technology apparently could not keep these lower levels dewatered.

The mine workings consist of 9 levels on 100' spacings starting with the 0 level adit and extending to the 800' level. The adit intersects an internal decline at 400' and continues past to an internal 800' deep 3 compartment shaft at 3300' from the portal. The adit is at least 6'.6" high throughout most of its length. The shaft extends 800' to the bottom of the mine and intersects the manto between the 500 and 600 levels. The decline runs from the 0 to 500' levels,approximately 10m below the manto. It is from 5'6" high to over 6" 6". The decline is 15 degrees to the 350 level, where it steepens to 22 degrees. Below the 500 Level the main access workings are within the manto with level haulages leading to the shaft on the 600 and 700 levels. The 800 Level drift never reached the orebody and it is not known how much underhand stoping was done below the 700 Level.

The Los Lamentos deposit was covered by two claims originally owned by different mining companies. The Erupcion Mining Company had the ground from the surface to the 500 Level and the Ahumada Mining Company had the ground between the 500 and 800 Levels. The two companies were ultimately merged into the Erupcion-Ahumada Mining Company, but the different styles of development remain as evidence for the separate beginnings.

There is a distinct difference in the specimen mineralogy above and below the 500 Level. Above the 500 Level the principal specimens produced were anglesite and anglesite pseudomorphs after cerussite in a matrix of native sulfur and gypsum. There is no wulfenite of import from above the 500 Level and the anglesite-cerussite ores die out before reaching the 500 Level. This mineralogical shift coincides with a change of mine name, so if one is a stickler for detail, wulfenites from the mine should be attributed to the Ahumada Mine, and the anglesites to the Erupcion Mine.

Specimen mining occurred primarily in the 1920s through the early 1960s with smaller, but very good quality wulfenite specimens were recovered in 1968, 1976, and lastly in the early 1980s, during a period when Fresnillo rehabilitated the mine in an unsuccessful search for sulfide ores below the oxide levels. At that time the 700' level was accessible and the deepest wulfenite ever mined (supposedly) was extracted from partially flooded pockets a few meters below the 700 level. The miners worked in waist-high water in an area known as "Los Banos" (The Baths). An old miner reports that although good wulfenite was being produced, the water became too much of an obstacle to overcome and specimen mining was abandoned.

Wulfenite and vanadinite first appear in quantity just below the 500' level and the wulfenite increases in quantity and quality downwards, at least to the 700' level. The wulfenite occurs as pods and pcokets within the massive sanded cerussite core of the orebody, and in abundant pcoket zones around the margins of the cerussite core. The cerussite ores reportedly were very friable and only needed shoveling to remove them. Blasting was only necessary to remove calcite webs and fins within the ores. One old miner reported that wulfenite was so abundant in the ores that in the 50s and 60s, Manuel Ontiveros kept a full-time collector in the stopes alongside the miners to remove the wulfenite from the sanded ores.

In the upper portions of the wulfenite zone, between the 500 and 650' levels, vanadinite and descloizite are very abundant and often occur as overgrowths on or pseudomorphs after the wulfenite. Approaching the 700' level, the vanadinite and descloizite separate from the wulfenite and the size, color, and luster of the wulfenite improves. According to an old miner, the best specimens came from just above, and on, the 700' level with some of the very best material coming from the then partially flooded 700' level. The mine owner reported leaving "good" specimens behind on his last collecting foray (1981), expecting to return for them, but being unable to do so because of rising water. Fresnillo drill logs (1983) report substantial amounts of wulfenite in the cerussite they cut in drill holes between the 700 and 800 levels, and below. It appears that good quality wulfenite persists below the limit of mining, and probably goes at least to the 800' level.

Alternative Label Names

This is a list of additional names that have been recorded for mineral labels associated with this locality in the minID database. This may include previous versions of the locality name hierarchy from mindat.org, data entry errors, and it may also include unconfirmed sublocality names or other names that can only be matched to this level.

Los Lamentos, Chihuahua, Mexico

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List

Mineral list contains entries from the region specified including sub-localities

24 valid minerals.

Detailed Mineral List:

Anglesite
Formula: PbSO4
Baryte
Formula: BaSO4
Brochantite
Formula: Cu4(SO4)(OH)6
Calcite
Formula: CaCO3
Cerussite
Formula: PbCO3
Chalcopyrite
Formula: CuFeS2
Chlorargyrite
Formula: AgCl
Descloizite
Formula: PbZn(VO4)(OH)
Dolomite
Formula: CaMg(CO3)2
Galena
Formula: PbS
Reference: Econ Geol (1993) 88:934-947
Goethite
Formula: α-Fe3+O(OH)
Gypsum
Formula: CaSO4 · 2H2O
Hematite
Formula: Fe2O3
Hemimorphite
Formula: Zn4Si2O7(OH)2 · H2O
Hydrozincite
Formula: Zn5(CO3)2(OH)6
Plumbojarosite
Formula: Pb0.5Fe3+3(SO4)2(OH)6
Pyrite
Formula: FeS2
Pyromorphite
Formula: Pb5(PO4)3Cl
Quartz
Formula: SiO2
Sphalerite
Formula: ZnS
Sulphur
Formula: S8
Vanadinite
Formula: Pb5(VO4)3Cl
Reference: [www.johnbetts-fineminerals.com]
Vanadinite var: Arsenatian Vanadinite
Formula: Pb5[(V,As)O4]3Cl
Willemite
Formula: Zn2SiO4
Wulfenite
Formula: Pb(MoO4)
Reference: Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 1084.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Sulphur1.CC.05S8
Group 2 - Sulphides and Sulfosalts
Chalcopyrite2.CB.10aCuFeS2
Galena2.CD.10PbS
Pyrite2.EB.05aFeS2
Sphalerite2.CB.05aZnS
Group 3 - Halides
Chlorargyrite3.AA.15AgCl
Group 4 - Oxides and Hydroxides
Goethite4.00.α-Fe3+O(OH)
Hematite4.CB.05Fe2O3
Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Cerussite5.AB.15PbCO3
Dolomite5.AB.10CaMg(CO3)2
Hydrozincite5.BA.15Zn5(CO3)2(OH)6
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
'Anglesite'7.AD.35PbSO4
Baryte7.AD.35BaSO4
Brochantite7.BB.25Cu4(SO4)(OH)6
Gypsum7.CD.40CaSO4 · 2H2O
Plumbojarosite7.BC.10Pb0.5Fe3+3(SO4)2(OH)6
Wulfenite7.GA.05Pb(MoO4)
Group 8 - Phosphates, Arsenates and Vanadates
Descloizite8.BH.40PbZn(VO4)(OH)
Pyromorphite8.BN.05Pb5(PO4)3Cl
Vanadinite8.BN.05Pb5(VO4)3Cl
var: Arsenatian Vanadinite8.BN.05Pb5[(V,As)O4]3Cl
Group 9 - Silicates
Hemimorphite9.BD.10Zn4Si2O7(OH)2 · H2O
Willemite9.AA.05Zn2SiO4

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Semi-metals and non-metals
Sulphur1.3.5.1S8
Group 2 - SULFIDES
AmXp, with m:p = 1:1
Galena2.8.1.1PbS
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 4 - SIMPLE OXIDES
A2X3
Hematite4.3.1.2Fe2O3
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Goethite6.1.1.2α-Fe3+O(OH)
Group 9 - NORMAL HALIDES
AX
Chlorargyrite9.1.4.1AgCl
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Cerussite14.1.3.4PbCO3
AB(XO3)2
Dolomite14.2.1.1CaMg(CO3)2
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Hydrozincite16a.4.1.1Zn5(CO3)2(OH)6
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Anglesite28.3.1.3PbSO4
Baryte28.3.1.1BaSO4
Group 29 - HYDRATED ACID AND NORMAL SULFATES
AXO4·xH2O
Gypsum29.6.3.1CaSO4 · 2H2O
Group 30 - ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
(AB)m(XO4)pZq, where m:p>2:1
Brochantite30.1.3.1Cu4(SO4)(OH)6
(AB)2(XO4)Zq
Plumbojarosite30.2.5.6Pb0.5Fe3+3(SO4)2(OH)6
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
(AB)2(XO4)Zq
Descloizite41.5.2.1PbZn(VO4)(OH)
A5(XO4)3Zq
Pyromorphite41.8.4.1Pb5(PO4)3Cl
Vanadinite41.8.4.3Pb5(VO4)3Cl
Group 48 - ANHYDROUS MOLYBDATES AND TUNGSTATES
AXO4
Wulfenite48.1.3.1Pb(MoO4)
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in [4] coordination
Willemite51.1.1.2Zn2SiO4
Group 56 - SOROSILICATES Si2O7 Groups, With Additional O, OH, F and H2O
Si2O7 Groups and O, OH, F, and H2O with cations in [4] coordination
Hemimorphite56.1.2.1Zn4Si2O7(OH)2 · H2O
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Rocks, etc.
Vanadinite
var: Arsenatian Vanadinite
-Pb5[(V,As)O4]3Cl

List of minerals for each chemical element

HHydrogen
H BrochantiteCu4(SO4)(OH)6
H DescloizitePbZn(VO4)(OH)
H Goethiteα-Fe3+O(OH)
H GypsumCaSO4 · 2H2O
H HemimorphiteZn4Si2O7(OH)2 · H2O
H HydrozinciteZn5(CO3)2(OH)6
H PlumbojarositePb0.5Fe33+(SO4)2(OH)6
CCarbon
C CalciteCaCO3
C CerussitePbCO3
C DolomiteCaMg(CO3)2
C HydrozinciteZn5(CO3)2(OH)6
OOxygen
O AnglesitePbSO4
O Vanadinite (var: Arsenatian Vanadinite)Pb5[(V,As)O4]3Cl
O BaryteBaSO4
O BrochantiteCu4(SO4)(OH)6
O CalciteCaCO3
O CerussitePbCO3
O DescloizitePbZn(VO4)(OH)
O DolomiteCaMg(CO3)2
O Goethiteα-Fe3+O(OH)
O GypsumCaSO4 · 2H2O
O HematiteFe2O3
O HemimorphiteZn4Si2O7(OH)2 · H2O
O HydrozinciteZn5(CO3)2(OH)6
O PlumbojarositePb0.5Fe33+(SO4)2(OH)6
O PyromorphitePb5(PO4)3Cl
O QuartzSiO2
O VanadinitePb5(VO4)3Cl
O WillemiteZn2SiO4
O WulfenitePb(MoO4)
MgMagnesium
Mg DolomiteCaMg(CO3)2
SiSilicon
Si HemimorphiteZn4Si2O7(OH)2 · H2O
Si QuartzSiO2
Si WillemiteZn2SiO4
PPhosphorus
P PyromorphitePb5(PO4)3Cl
SSulfur
S AnglesitePbSO4
S BaryteBaSO4
S BrochantiteCu4(SO4)(OH)6
S ChalcopyriteCuFeS2
S GalenaPbS
S GypsumCaSO4 · 2H2O
S PlumbojarositePb0.5Fe33+(SO4)2(OH)6
S PyriteFeS2
S SphaleriteZnS
S SulphurS8
ClChlorine
Cl Vanadinite (var: Arsenatian Vanadinite)Pb5[(V,As)O4]3Cl
Cl ChlorargyriteAgCl
Cl PyromorphitePb5(PO4)3Cl
Cl VanadinitePb5(VO4)3Cl
CaCalcium
Ca CalciteCaCO3
Ca DolomiteCaMg(CO3)2
Ca GypsumCaSO4 · 2H2O
VVanadium
V Vanadinite (var: Arsenatian Vanadinite)Pb5[(V,As)O4]3Cl
V DescloizitePbZn(VO4)(OH)
V VanadinitePb5(VO4)3Cl
FeIron
Fe ChalcopyriteCuFeS2
Fe Goethiteα-Fe3+O(OH)
Fe HematiteFe2O3
Fe PlumbojarositePb0.5Fe33+(SO4)2(OH)6
Fe PyriteFeS2
CuCopper
Cu BrochantiteCu4(SO4)(OH)6
Cu ChalcopyriteCuFeS2
ZnZinc
Zn DescloizitePbZn(VO4)(OH)
Zn HemimorphiteZn4Si2O7(OH)2 · H2O
Zn HydrozinciteZn5(CO3)2(OH)6
Zn SphaleriteZnS
Zn WillemiteZn2SiO4
AsArsenic
As Vanadinite (var: Arsenatian Vanadinite)Pb5[(V,As)O4]3Cl
MoMolybdenum
Mo WulfenitePb(MoO4)
AgSilver
Ag ChlorargyriteAgCl
BaBarium
Ba BaryteBaSO4
PbLead
Pb AnglesitePbSO4
Pb Vanadinite (var: Arsenatian Vanadinite)Pb5[(V,As)O4]3Cl
Pb CerussitePbCO3
Pb DescloizitePbZn(VO4)(OH)
Pb GalenaPbS
Pb PlumbojarositePb0.5Fe33+(SO4)2(OH)6
Pb PyromorphitePb5(PO4)3Cl
Pb VanadinitePb5(VO4)3Cl
Pb WulfenitePb(MoO4)

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
ALVAREZ, A. and GILES, D.A. (1986) Los Lamentos lead-silver mine, Chihuahua: in CLARK, K.F., MEGAW, P.K.M., and RUIZ, J., eds., Lead-Zinc-Silver carbonate-hosted deposits of northern Mexico, Society of Economic Geologists Guidebook, Nov. 13-17, 1986, p. 305-310
BENNETT, R. H. (1963) Quest for Ore. T. S. Denison & Co., Minneapolis, 135-152.
FOSHAG, W.F. (1934) The ore deposits of Los Lamentos,Chihuahua, Mexico. Economic Geology, 29, 330-345.
- Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 1084.
RICKARD, T.A. (1924) The Ahumada lead mine and the ore deposits of the Los Lamentos Range, in Mexico. Engineering and Mining Journal, 118, 365-373.
- Wilson, W.E. (1980): Famous mineral localities: Los Lamentos, Chihuahua, Mexico. Mineralogical Record, 11 (5), 277-286.

External Links

- http://www.foro-minerales.com/forum/viewtopic.php?t=5805 (A complete description of the locality and its minerals with many images. In Spanish language)

Localities in this Region
Show map

Mexico

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2018, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: December 11, 2018 04:43:10 Page generated: December 8, 2018 10:13:02
Go to top of page