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Las Asperezas mine (Sarmiento deposit; Veta Sarmiento), Sierra de Cacho, Villa Castelli, General Lamadrid department, La Rioja Province, Argentinai
Regional Level Types
Las Asperezas mine (Sarmiento deposit; Veta Sarmiento)Mine
Sierra de CachoSierra
Villa Castelli- not defined -
General Lamadrid departmentDepartment
La Rioja ProvinceProvince
ArgentinaCountry

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Key
Latitude & Longitude (WGS84):
28° 55' 8'' South , 68° 41' 2'' West
Latitude & Longitude (decimal):
Locality type:
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Vinchina2,834 (2016)49.7km


A very small mine worked for silver (mainly the mineral eucairite) during the 1880s. By the time the workings had reached a mere 8 meters deep, they had already yielded 115 Kg of silver. By 1889, when Klockmann received the specimens from which he described the new species umangite, labelled as being from the "Sarmiento vein" (which Guerrero, based on old 19th century correspondence, equated with Las Asperezas), the workings had reached 14 meters deep, where a 35 cm wide vein was comprised of 50% eucairite. Therefore most likely this mine is the true type locality for umangite.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


10 valid minerals. 2 (TL) - type locality of valid minerals.

Detailed Mineral List:

Berzelianite
Formula: Cu2Se
Reference: DE BRODTKORB, Milka K. Precious metaltellurides and other Te-bearing minerals in different paragenesis of Argentina: A review. Rev. Asoc. Geol. Argent. [online]. 2009, vol.64, n.3, pp. 365-372.
Calcite
Formula: CaCO3
Reference: DE BRODTKORB, Milka K. Precious metaltellurides and other Te-bearing minerals in different paragenesis of Argentina: A review. Rev. Asoc. Geol. Argent. [online]. 2009, vol.64, n.3, pp. 365-372.
Eucairite
Formula: AgCuSe
Reference: DE BRODTKORB, Milka K. Precious metaltellurides and other Te-bearing minerals in different paragenesis of Argentina: A review. Rev. Asoc. Geol. Argent. [online]. 2009, vol.64, n.3, pp. 365-372.; Paar, W. H., Putz, H., Topa, D., de Brodtkorb, M. K., & Sureda, R. J. (2005, January). Occurrence and paragenesis of tellurium in mineral deposits of Argentina. In Mineral Deposit Research: Meeting the Global Challenge (pp. 1419-1422). Springer Berlin Heidelberg.; Grundmann, G., & Förster, H. J. (2018). The Sierra de Cacheuta Vein-Type Se Mineralization, Mendoza Province, Argentina. Minerals, 8(4), 127.
Fischesserite
Formula: Ag3AuSe2
Reference: DE BRODTKORB, Milka K. Precious metaltellurides and other Te-bearing minerals in different paragenesis of Argentina: A review. Rev. Asoc. Geol. Argent. [online]. 2009, vol.64, n.3, pp. 365-372.; Grundmann, G., & Förster, H. J. (2018). The Sierra de Cacheuta Vein-Type Se Mineralization, Mendoza Province, Argentina. Minerals, 8(4), 127.
Gold
Formula: Au
Reference: DE BRODTKORB, Milka K. Precious metaltellurides and other Te-bearing minerals in different paragenesis of Argentina: A review. Rev. Asoc. Geol. Argent. [online]. 2009, vol.64, n.3, pp. 365-372.; Grundmann, G., & Förster, H. J. (2018). The Sierra de Cacheuta Vein-Type Se Mineralization, Mendoza Province, Argentina. Minerals, 8(4), 127.
Klockmannite (TL)
Formula: CuSe
Type Locality:
Reference: Ramdohr, P. (1928) Klockmannit, ein natürliches Kupferselenid. Centralblatt für Mineralogie A, 225- 232 (as "Sierra de Umango"); Earley, J.W. (1949) American Mineralogist, 34, 435ff (as "Sierra de Umango"); DE BRODTKORB, Milka K. Precious metaltellurides and other Te-bearing minerals in different paragenesis of Argentina: A review. Rev. Asoc. Geol. Argent. [online]. 2009, vol.64, n.3, pp. 365-372.; Paar, W. H., Putz, H., Topa, D., de Brodtkorb, M. K., & Sureda, R. J. (2005, January). Occurrence and paragenesis of tellurium in mineral deposits of Argentina. In Mineral Deposit Research: Meeting the Global Challenge (pp. 1419-1422). Springer Berlin Heidelberg.
Merenskyite
Formula: (Pd,Pt)(Te,Bi)2
Reference: DE BRODTKORB, Milka K. Precious metaltellurides and other Te-bearing minerals in different paragenesis of Argentina: A review. Rev. Asoc. Geol. Argent. [online]. 2009, vol.64, n.3, pp. 365-372.; Paar, W.H., Topa, D., Sureda, R.J., Stumpfl, E. and Mühlhans, H. (2004) Merenskyita, PdTe2, en las menas de selenio, cobre y plata de la mina Las Asperezas, distrito minero Sierra de Umango, provincia de La Rioja, Argentina. 7th Congreso de Mineralogía y Metalogenia, Actas, 113-118, Buenos Aires.; Paar, W. H., Putz, H., Topa, D., de Brodtkorb, M. K., & Sureda, R. J. (2005, January). Occurrence and paragenesis of tellurium in mineral deposits of Argentina. In Mineral Deposit Research: Meeting the Global Challenge (pp. 1419-1422). Springer Berlin Heidelberg.
Naumannite
Formula: Ag2Se
Reference: DE BRODTKORB, Milka K. Precious metaltellurides and other Te-bearing minerals in different paragenesis of Argentina: A review. Rev. Asoc. Geol. Argent. [online]. 2009, vol.64, n.3, pp. 365-372.; Grundmann, G., & Förster, H. J. (2018). The Sierra de Cacheuta Vein-Type Se Mineralization, Mendoza Province, Argentina. Minerals, 8(4), 127.
Selenium
Formula: Se
Reference: Grundmann, G., & Förster, H. J. (2018). The Sierra de Cacheuta Vein-Type Se Mineralization, Mendoza Province, Argentina. Minerals, 8(4), 127.
Umangite (TL)
Formula: Cu3Se2
Type Locality:
Reference: O. Kempff, W.H. Paar, S. Tawackoli (2009) Minerales de Bolivia, p. 34.; DE BRODTKORB, Milka K. Precious metaltellurides and other Te-bearing minerals in different paragenesis of Argentina: A review. Rev. Asoc. Geol. Argent. [online]. 2009, vol.64, n.3, pp. 365-372.; Paar, W. H., Putz, H., Topa, D., de Brodtkorb, M. K., & Sureda, R. J. (2005, January). Occurrence and paragenesis of tellurium in mineral deposits of Argentina. In Mineral Deposit Research: Meeting the Global Challenge (pp. 1419-1422). Springer Berlin Heidelberg.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Gold1.AA.05Au
Selenium1.CC.10Se
Group 2 - Sulphides and Sulfosalts
Berzelianite2.BA.20Cu2Se
Eucairite2.BA.50AgCuSe
Fischesserite2.BA.75Ag3AuSe2
Klockmannite (TL)2.CA.05bCuSe
Merenskyite2.EA.20(Pd,Pt)(Te,Bi)2
Naumannite2.BA.55Ag2Se
Umangite (TL)2.BA.25Cu3Se2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Gold1.1.1.1Au
Semi-metals and non-metals
Selenium1.3.4.1Se
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 2:1
Berzelianite2.4.10.1Cu2Se
Eucairite2.4.6.2AgCuSe
Fischesserite2.4.3.2Ag3AuSe2
Naumannite2.4.1.2Ag2Se
AmBnXp, with (m+n):p = 3:2
Umangite (TL)2.5.1.1Cu3Se2
AmXp, with m:p = 1:1
Klockmannite (TL)2.8.12.2CuSe
AmBnXp, with (m+n):p = 1:2
Merenskyite2.12.14.4(Pd,Pt)(Te,Bi)2
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3

List of minerals for each chemical element

CCarbon
C CalciteCaCO3
OOxygen
O CalciteCaCO3
CaCalcium
Ca CalciteCaCO3
CuCopper
Cu UmangiteCu3Se2
Cu KlockmanniteCuSe
Cu EucairiteAgCuSe
Cu BerzelianiteCu2Se
SeSelenium
Se UmangiteCu3Se2
Se KlockmanniteCuSe
Se EucairiteAgCuSe
Se NaumanniteAg2Se
Se FischesseriteAg3AuSe2
Se BerzelianiteCu2Se
Se SeleniumSe
PdPalladium
Pd Merenskyite(Pd,Pt)(Te,Bi)2
AgSilver
Ag EucairiteAgCuSe
Ag NaumanniteAg2Se
Ag FischesseriteAg3AuSe2
TeTellurium
Te Merenskyite(Pd,Pt)(Te,Bi)2
AuGold
Au FischesseriteAg3AuSe2
Au GoldAu

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Paar, W.H., Topa, D., Sureda, R.J., Stumpfl, E. and Mühlhans, H. (2004) Merenskyita, PdTe2, en las menas de selenio, cobre y plata de la mina Las Asperezas, distrito minero Sierra de Umango, provincia de La Rioja, Argentina. 7th Congreso de Mineralogía y Metalogenia, Actas, 113-118, Buenos Aires.
Guerrero, M.A. (1969) Estudio geológico-económico y prospección geoquímica orientativa del Distrito Minero Cerro Cacho – Sierra de Umango. Dirección Nacional de Geología y Minería, (inédito), 171 p., Buenos Aires.

Other Regions, Features and Areas containg this locality

South AmericaContinent
South America PlateTectonic Plate

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