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Tonco-Amblayo mining district, San Carlos Department, Salta Province, Argentinai
Regional Level Types
Tonco-Amblayo mining districtDistrict
San Carlos DepartmentDepartment
Salta ProvinceProvince
ArgentinaCountry

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Latitude & Longitude (WGS84):
25° 27' 46'' South , 65° 54' 34'' West
Latitude & Longitude (decimal):
Locality type:


It comprises a series of uraniferous bodies hosted at various levels (preferably Sandy), the mesocretacic of northern Argentina series, distributed on an area of 90 km of extension n-S and 60 km E.
Almost all economic interest deposits were discovered with prospecting works in 1959, located in the sector of Tonco-Amblayo.

The largest of them is Don Otto, which featured continuous mineralization on the surface over 2,500 meters, with useful power of 1 meter and average 0.15% U3O8. Development work met on the southern half of the deposit up to 100 meters of depth (level 0), with more than 2,000 meters of underground workings.

Deposit Martín Güemes M. had a development in the area of 300 meters, useful power of 1 meter and laws average 0.13% U3O8 and 0.5% V2O5, having explored up to 40 meters deep.

The body of "Los Berthos" presented somewhat irregular mineralization along 300 meters and laws of 0.5% U3O8 and 1% V2O5 to average 1-meter thickness. Underground workings were extended up to - 32 meters.

Pedro Nicolás tank presented on the surface a continuous mineralization 700 meters, having certificate extension of up to 180 meters below the outcrop, with development of approximately 300 metres above the Bank.

The body Cachiyal, also aflorant, showed the continuity of the same to the level - 35 meters.

There are other deposits in the district such as
- Pepe Luis, mineralization on 400 meters;
- Emmy, about 200 meters, etc., with output power ranging from 0.6 to 1 metre and tenors media between 0.1 and 0.2% U3O8.

On other bodies such as Don Bosco, El Pelado, Providência, etc... ran minor recognition work, which showed that they are of lesser importance than the previous ones.
Reservations ("measured", "indicated" and "inferred" mineral), reached 2,000 tonnes more additional 300 tonnes of U3O8.
The extent and continuity of mineralization at surface and at depth of the Don Otto, Pedro Nicolás, Los Berthos, Cachiyal deposits and similar characteristics of bodies allowed to infer in his time, the reasonable prospect of development of the district were of the order of 14,000 tonnes of U3O8.
The dominant mineral in "Don Otto" and "Martin M. de Güemes" is the Tyuyamunite. The dominant mineral in "Los Berthos" and "Emmy" is the Carnotite.
Ores of the district were economically concentrables by acid leaching in a station for 36,000 tons. The calcium concentrate pre obtained, with laws varying between 5 and 8 per cent of U3O8 was sent to its final refining to a plant located in the province of Córdoba.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

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

4 valid minerals.

Detailed Mineral List:

Carnotite
Formula: K2(UO2)2(VO4)2 · 3H2O
Reference: C. T Friz, F. Rodrigo y P. N. Stipanicic. Recursos y posibilidades uraníferas en Argentina. Session 2.11 P/405. Comisión Nacional de Energía Atómica. Argentina.
Gypsum
Formula: CaSO4 · 2H2O
Reference: C. T Friz, F. Rodrigo y P. N. Stipanicic. Recursos y posibilidades uraníferas en Argentina. Session 2.11 P/405. Comisión Nacional de Energía Atómica. Argentina.
'Manganese Oxides'
Reference: Raúl Jorge Tauber Larry
Phosphuranylite
Formula: KCa(H3O)3(UO2)7(PO4)4O4 · 8H2O
Reference: Raúl Jorge Tauber Larry; C. T Friz, F. Rodrigo y P. N. Stipanicic. Recursos y posibilidades uraníferas en Argentina. Session 2.11 P/405. Comisión Nacional de Energía Atómica. Argentina.
Tyuyamunite
Formula: Ca(UO2)2(VO4)2 · 5-8H2O
Reference: C. T Friz, F. Rodrigo y P. N. Stipanicic. Recursos y posibilidades uraníferas en Argentina. Session 2.11 P/405. Comisión Nacional de Energía Atómica. Argentina.

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Carnotite4.HB.05K2(UO2)2(VO4)2 · 3H2O
Tyuyamunite4.HB.25Ca(UO2)2(VO4)2 · 5-8H2O
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Gypsum7.CD.40CaSO4 · 2H2O
Group 8 - Phosphates, Arsenates and Vanadates
Phosphuranylite8.EC.10KCa(H3O)3(UO2)7(PO4)4O4 · 8H2O
Unclassified Minerals, Rocks, etc.
'Manganese Oxides'-

List of minerals for each chemical element

HHydrogen
H CarnotiteK2(UO2)2(VO4)2 · 3H2O
H TyuyamuniteCa(UO2)2(VO4)2 · 5-8H2O
H GypsumCaSO4 · 2H2O
H PhosphuranyliteKCa(H3O)3(UO2)7(PO4)4O4 · 8H2O
OOxygen
O CarnotiteK2(UO2)2(VO4)2 · 3H2O
O TyuyamuniteCa(UO2)2(VO4)2 · 5-8H2O
O GypsumCaSO4 · 2H2O
O PhosphuranyliteKCa(H3O)3(UO2)7(PO4)4O4 · 8H2O
PPhosphorus
P PhosphuranyliteKCa(H3O)3(UO2)7(PO4)4O4 · 8H2O
SSulfur
S GypsumCaSO4 · 2H2O
KPotassium
K CarnotiteK2(UO2)2(VO4)2 · 3H2O
K PhosphuranyliteKCa(H3O)3(UO2)7(PO4)4O4 · 8H2O
CaCalcium
Ca TyuyamuniteCa(UO2)2(VO4)2 · 5-8H2O
Ca GypsumCaSO4 · 2H2O
Ca PhosphuranyliteKCa(H3O)3(UO2)7(PO4)4O4 · 8H2O
VVanadium
V CarnotiteK2(UO2)2(VO4)2 · 3H2O
V TyuyamuniteCa(UO2)2(VO4)2 · 5-8H2O
UUranium
U CarnotiteK2(UO2)2(VO4)2 · 3H2O
U TyuyamuniteCa(UO2)2(VO4)2 · 5-8H2O
U PhosphuranyliteKCa(H3O)3(UO2)7(PO4)4O4 · 8H2O

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Friz, C.T., Rodrigo, F., Stipanicic, P.N. (xxxx) Recursos y posibilidades uraníferas en Argentina. Session 2.11 P/405. Comisión Nacional de Energía Atómica. Argentina.
Gamba, J.L. (1959) Prospección aérea por minerales radioactivos. Posibilidades operativas en la Provincia de Salta. Informe interno, Gerencia de materias Primas, CNEA.
Stipanicic, P.N., Baulíes, O.L., Rodrigo, F., Martínez, C.G. (1960) Anales de las primeras Jornadas Geológicas Argentinas: 351-384, San Juan.
Linares, E., Toubes, R.O. (1960) Anales de las primeras Jornadas Geológicas Argentinas: 3: 191-206, San Juan.
Parera, C.A., Ibáñez, M. (1963) Yacimiento uranífero "Don Otto" y demás afloramientos del área Tonco-Amblayo. Anales de las segundas Jornadas Geológicas Argentinas. Salta.
Raúl Jorge Tauber Larry.

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