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La Josefina prospect, Tres Cerros, Deseado massif, Deseado department, Santa Cruz Province, Argentinai
Regional Level Types
La Josefina prospectProspect
Tres Cerros- not defined -
Deseado massifMassif
Deseado departmentDepartment
Santa Cruz ProvinceProvince
ArgentinaCountry

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Key
Latitude & Longitude (WGS84):
48° South , 68° West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~52km
Locality type:
Name(s) in local language(s):
Macizo del Deseado


Epithermal Au-Ag ores related to mid-Jurassic volcanism.
It is bounded by the meridians 69 º 15 'and 69 º 30' west longitude and the parallel 47 º 45 'and 47 º 59' south latitude.

Regions containing this locality

South America PlateTectonic Plate
South AmericaContinent
Patagonia, South AmericaArea
Patagonia, Argentina/ChileRegion

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


16 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Arsenopyrite
Formula: FeAsS
Reference: Moreira, P., & Fernández, R. R. (2015). La Josefina Au–Ag deposit (Patagonia, Argentina): A Jurassic epithermal deposit formed in a hot spring environment. Ore Geology Reviews, 67, 297-313.
Baryte
Formula: BaSO4
Reference: FERNANDEZ, Raúl R. et al. Gold and silver deposits related to Jurassic Patagonian volcanism: review and perspectives for exploration. Rev. Asoc. Geol. Argent. [online]. 2008, vol.63, n.4, pp. 665-681.; Moreira, P., & Fernández, R. R. (2015). La Josefina Au–Ag deposit (Patagonia, Argentina): A Jurassic epithermal deposit formed in a hot spring environment. Ore Geology Reviews, 67, 297-313.
Bornite
Formula: Cu5FeS4
Reference: FERNANDEZ, Raúl R. et al. Gold and silver deposits related to Jurassic Patagonian volcanism: review and perspectives for exploration. Rev. Asoc. Geol. Argent. [online]. 2008, vol.63, n.4, pp. 665-681.; Moreira, P., & Fernández, R. R. (2015). La Josefina Au–Ag deposit (Patagonia, Argentina): A Jurassic epithermal deposit formed in a hot spring environment. Ore Geology Reviews, 67, 297-313.
Calcite
Formula: CaCO3
Reference: FERNANDEZ, Raúl R. et al. Gold and silver deposits related to Jurassic Patagonian volcanism: review and perspectives for exploration. Rev. Asoc. Geol. Argent. [online]. 2008, vol.63, n.4, pp. 665-681.
Chalcopyrite
Formula: CuFeS2
Reference: Milka K. de Brodtkorb (2002) Las Especies Minerales de la Republica Argentina. Vol. 1 (elements, sulphides and sulphosalts). (Asociacion Mineralogica Argentina); Moreira, P., & Fernández, R. R. (2015). La Josefina Au–Ag deposit (Patagonia, Argentina): A Jurassic epithermal deposit formed in a hot spring environment. Ore Geology Reviews, 67, 297-313.
'Chlorite Group'
Reference: Moreira, P., & Fernández, R. R. (2015). La Josefina Au–Ag deposit (Patagonia, Argentina): A Jurassic epithermal deposit formed in a hot spring environment. Ore Geology Reviews, 67, 297-313.
'Clays'
Reference: Moreira, P., & Fernández, R. R. (2015). La Josefina Au–Ag deposit (Patagonia, Argentina): A Jurassic epithermal deposit formed in a hot spring environment. Ore Geology Reviews, 67, 297-313.
'Electrum'
Formula: (Au, Ag)
Reference: Milka K. de Brodtkorb (2002) Las Especies Minerales de la Republica Argentina. Vol. 1 (elements, sulphides and sulphosalts). (Asociacion Mineralogica Argentina); FERNANDEZ, Raúl R. et al. Gold and silver deposits related to Jurassic Patagonian volcanism: review and perspectives for exploration. Rev. Asoc. Geol. Argent. [online]. 2008, vol.63, n.4, pp. 665-681.; Moreira, P., & Fernández, R. R. (2015). La Josefina Au–Ag deposit (Patagonia, Argentina): A Jurassic epithermal deposit formed in a hot spring environment. Ore Geology Reviews, 67, 297-313.
Freibergite
Formula: (Ag,Cu,◻)10Fe2+2Sb4S12
Reference: Moreira, P., & Fernández, R. R. (2015). La Josefina Au–Ag deposit (Patagonia, Argentina): A Jurassic epithermal deposit formed in a hot spring environment. Ore Geology Reviews, 67, 297-313.
Galena
Formula: PbS
Reference: Milka K. de Brodtkorb (2002) Las Especies Minerales de la Republica Argentina. Vol. 1 (elements, sulphides and sulphosalts). (Asociacion Mineralogica Argentina); FERNANDEZ, Raúl R. et al. Gold and silver deposits related to Jurassic Patagonian volcanism: review and perspectives for exploration. Rev. Asoc. Geol. Argent. [online]. 2008, vol.63, n.4, pp. 665-681.; Moreira, P., & Fernández, R. R. (2015). La Josefina Au–Ag deposit (Patagonia, Argentina): A Jurassic epithermal deposit formed in a hot spring environment. Ore Geology Reviews, 67, 297-313.
Gold
Formula: Au
Reference: Milka K. de Brodtkorb (2002) Las Especies Minerales de la Republica Argentina. Vol. 1 (elements, sulphides and sulphosalts). (Asociacion Mineralogica Argentina); FERNANDEZ, Raúl R. et al. Gold and silver deposits related to Jurassic Patagonian volcanism: review and perspectives for exploration. Rev. Asoc. Geol. Argent. [online]. 2008, vol.63, n.4, pp. 665-681.
Hematite
Formula: Fe2O3
Reference: FERNANDEZ, Raúl R. et al. Gold and silver deposits related to Jurassic Patagonian volcanism: review and perspectives for exploration. Rev. Asoc. Geol. Argent. [online]. 2008, vol.63, n.4, pp. 665-681.
Hematite var: Specularite
Formula: Fe2O3
Reference: Moreira, P., & Fernández, R. R. (2015). La Josefina Au–Ag deposit (Patagonia, Argentina): A Jurassic epithermal deposit formed in a hot spring environment. Ore Geology Reviews, 67, 297-313.
'K Feldspar'
Reference: FERNANDEZ, Raúl R. et al. Gold and silver deposits related to Jurassic Patagonian volcanism: review and perspectives for exploration. Rev. Asoc. Geol. Argent. [online]. 2008, vol.63, n.4, pp. 665-681.
'K Feldspar var: Adularia'
Formula: KAlSi3O8
Reference: FERNANDEZ, Raúl R. et al. Gold and silver deposits related to Jurassic Patagonian volcanism: review and perspectives for exploration. Rev. Asoc. Geol. Argent. [online]. 2008, vol.63, n.4, pp. 665-681.; Moreira, P., & Fernández, R. R. (2015). La Josefina Au–Ag deposit (Patagonia, Argentina): A Jurassic epithermal deposit formed in a hot spring environment. Ore Geology Reviews, 67, 297-313.
Marcasite
Formula: FeS2
Reference: Moreira, P., & Fernández, R. R. (2015). La Josefina Au–Ag deposit (Patagonia, Argentina): A Jurassic epithermal deposit formed in a hot spring environment. Ore Geology Reviews, 67, 297-313.
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Moreira, P., & Fernández, R. R. (2015). La Josefina Au–Ag deposit (Patagonia, Argentina): A Jurassic epithermal deposit formed in a hot spring environment. Ore Geology Reviews, 67, 297-313.
Muscovite var: Illite
Formula: K0.65Al2.0[Al0.65Si3.35O10](OH)2
Reference: Moreira, P., & Fernández, R. R. (2015). La Josefina Au–Ag deposit (Patagonia, Argentina): A Jurassic epithermal deposit formed in a hot spring environment. Ore Geology Reviews, 67, 297-313.
Opal
Formula: SiO2 · nH2O
Reference: Moreira, P., & Fernández, R. R. (2015). La Josefina Au–Ag deposit (Patagonia, Argentina): A Jurassic epithermal deposit formed in a hot spring environment. Ore Geology Reviews, 67, 297-313.
Pyrite
Formula: FeS2
Reference: Milka K. de Brodtkorb (2002) Las Especies Minerales de la Republica Argentina. Vol. 1 (elements, sulphides and sulphosalts). (Asociacion Mineralogica Argentina); FERNANDEZ, Raúl R. et al. Gold and silver deposits related to Jurassic Patagonian volcanism: review and perspectives for exploration. Rev. Asoc. Geol. Argent. [online]. 2008, vol.63, n.4, pp. 665-681.; Moreira, P., & Fernández, R. R. (2015). La Josefina Au–Ag deposit (Patagonia, Argentina): A Jurassic epithermal deposit formed in a hot spring environment. Ore Geology Reviews, 67, 297-313.
Quartz
Formula: SiO2
Reference: Milka K. de Brodtkorb (2002) Las Especies Minerales de la Republica Argentina. Vol. 1 (elements, sulphides and sulphosalts). (Asociacion Mineralogica Argentina); FERNANDEZ, Raúl R. et al. Gold and silver deposits related to Jurassic Patagonian volcanism: review and perspectives for exploration. Rev. Asoc. Geol. Argent. [online]. 2008, vol.63, n.4, pp. 665-681.; Moreira, P., & Fernández, R. R. (2015). La Josefina Au–Ag deposit (Patagonia, Argentina): A Jurassic epithermal deposit formed in a hot spring environment. Ore Geology Reviews, 67, 297-313.
Quartz var: Chalcedony
Formula: SiO2
Reference: FERNANDEZ, Raúl R. et al. Gold and silver deposits related to Jurassic Patagonian volcanism: review and perspectives for exploration. Rev. Asoc. Geol. Argent. [online]. 2008, vol.63, n.4, pp. 665-681.; Moreira, P., & Fernández, R. R. (2015). La Josefina Au–Ag deposit (Patagonia, Argentina): A Jurassic epithermal deposit formed in a hot spring environment. Ore Geology Reviews, 67, 297-313.
'Smectite Group'
Formula: A0.3D2-3[T4O10]Z2 · nH2O
Reference: Moreira, P., & Fernández, R. R. (2015). La Josefina Au–Ag deposit (Patagonia, Argentina): A Jurassic epithermal deposit formed in a hot spring environment. Ore Geology Reviews, 67, 297-313.
Sphalerite
Formula: ZnS
Reference: Milka K. de Brodtkorb (2002) Las Especies Minerales de la Republica Argentina. Vol. 1 (elements, sulphides and sulphosalts). (Asociacion Mineralogica Argentina); Moreira, P., & Fernández, R. R. (2015). La Josefina Au–Ag deposit (Patagonia, Argentina): A Jurassic epithermal deposit formed in a hot spring environment. Ore Geology Reviews, 67, 297-313.
Tetrahedrite
Formula: Cu6Cu4(Fe2+,Zn)2Sb4S12S
Reference: Milka K. de Brodtkorb (2002) Las Especies Minerales de la Republica Argentina. Vol. 1 (elements, sulphides and sulphosalts). (Asociacion Mineralogica Argentina); FERNANDEZ, Raúl R. et al. Gold and silver deposits related to Jurassic Patagonian volcanism: review and perspectives for exploration. Rev. Asoc. Geol. Argent. [online]. 2008, vol.63, n.4, pp. 665-681.; Moreira, P., & Fernández, R. R. (2015). La Josefina Au–Ag deposit (Patagonia, Argentina): A Jurassic epithermal deposit formed in a hot spring environment. Ore Geology Reviews, 67, 297-313.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
'Electrum'1.AA.05(Au, Ag)
Gold1.AA.05Au
Group 2 - Sulphides and Sulfosalts
Arsenopyrite2.EB.20FeAsS
Bornite2.BA.15Cu5FeS4
Chalcopyrite2.CB.10aCuFeS2
Freibergite2.GB.05(Ag,Cu,◻)10Fe2+2Sb4S12
Galena2.CD.10PbS
Marcasite2.EB.10aFeS2
Pyrite2.EB.05aFeS2
Sphalerite2.CB.05aZnS
Tetrahedrite2.GB.05Cu6Cu4(Fe2+,Zn)2Sb4S12S
Group 4 - Oxides and Hydroxides
Hematite4.CB.05Fe2O3
var: Specularite4.CB.05Fe2O3
Opal4.DA.10SiO2 · nH2O
Quartz4.DA.05SiO2
var: Chalcedony4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Baryte7.AD.35BaSO4
Group 9 - Silicates
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
var: Illite9.EC.15K0.65Al2.0[Al0.65Si3.35O10](OH)2
Unclassified Minerals, Rocks, etc.
'Chlorite Group'-
'Clays'-
'K Feldspar'-
'var: Adularia'-KAlSi3O8
'Smectite Group'-A0.3D2-3[T4O10]Z2 · nH2O

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
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 3:2
Bornite2.5.2.1Cu5FeS4
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
Arsenopyrite2.12.4.1FeAsS
Marcasite2.12.2.1FeS2
Pyrite2.12.1.1FeS2
Group 3 - SULFOSALTS
3 <ø < 4
Freibergite3.3.6.3(Ag,Cu,◻)10Fe2+2Sb4S12
Tetrahedrite3.3.6.1Cu6Cu4(Fe2+,Zn)2Sb4S12S
Group 4 - SIMPLE OXIDES
A2X3
Hematite4.3.1.2Fe2O3
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Baryte28.3.1.1BaSO4
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
var: Illite71.2.2d.2K0.65Al2.0[Al0.65Si3.35O10](OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Si Tetrahedral Frameworks - SiO2 with H2O and organics
Opal75.2.1.1SiO2 · nH2O
Unclassified Minerals, Mixtures, etc.
'Chlorite Group'-
'Clays'-
'Electrum'-(Au, Ag)
Hematite
var: Specularite
-Fe2O3
'K Feldspar'-
'var: Adularia'-KAlSi3O8
Quartz
var: Chalcedony
-SiO2
'Smectite Group'-A0.3D2-3[T4O10]Z2 · nH2O

List of minerals for each chemical element

HHydrogen
H Muscovite (var: Illite)K0.65Al2.0[Al0.65Si3.35O10](OH)2
H OpalSiO2 · nH2O
H Smectite GroupA0.3D2-3[T4O10]Z2 · nH2O
H MuscoviteKAl2(AlSi3O10)(OH)2
CCarbon
C CalciteCaCO3
OOxygen
O QuartzSiO2
O HematiteFe2O3
O Quartz (var: Chalcedony)SiO2
O K Feldspar (var: Adularia)KAlSi3O8
O BaryteBaSO4
O CalciteCaCO3
O Muscovite (var: Illite)K0.65Al2.0[Al0.65Si3.35O10](OH)2
O OpalSiO2 · nH2O
O Smectite GroupA0.3D2-3[T4O10]Z2 · nH2O
O Hematite (var: Specularite)Fe2O3
O MuscoviteKAl2(AlSi3O10)(OH)2
AlAluminium
Al K Feldspar (var: Adularia)KAlSi3O8
Al Muscovite (var: Illite)K0.65Al2.0[Al0.65Si3.35O10](OH)2
Al MuscoviteKAl2(AlSi3O10)(OH)2
SiSilicon
Si QuartzSiO2
Si Quartz (var: Chalcedony)SiO2
Si K Feldspar (var: Adularia)KAlSi3O8
Si Muscovite (var: Illite)K0.65Al2.0[Al0.65Si3.35O10](OH)2
Si OpalSiO2 · nH2O
Si MuscoviteKAl2(AlSi3O10)(OH)2
SSulfur
S GalenaPbS
S SphaleriteZnS
S ChalcopyriteCuFeS2
S TetrahedriteCu6Cu4(Fe2+,Zn)2Sb4S12S
S PyriteFeS2
S BorniteCu5FeS4
S BaryteBaSO4
S ArsenopyriteFeAsS
S Freibergite(Ag,Cu,◻)10Fe22+Sb4S12
S MarcasiteFeS2
KPotassium
K K Feldspar (var: Adularia)KAlSi3O8
K Muscovite (var: Illite)K0.65Al2.0[Al0.65Si3.35O10](OH)2
K MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Ca CalciteCaCO3
FeIron
Fe ChalcopyriteCuFeS2
Fe TetrahedriteCu6Cu4(Fe2+,Zn)2Sb4S12S
Fe PyriteFeS2
Fe HematiteFe2O3
Fe BorniteCu5FeS4
Fe ArsenopyriteFeAsS
Fe Freibergite(Ag,Cu,◻)10Fe22+Sb4S12
Fe MarcasiteFeS2
Fe Hematite (var: Specularite)Fe2O3
CuCopper
Cu ChalcopyriteCuFeS2
Cu TetrahedriteCu6Cu4(Fe2+,Zn)2Sb4S12S
Cu BorniteCu5FeS4
Cu Freibergite(Ag,Cu,◻)10Fe22+Sb4S12
ZnZinc
Zn SphaleriteZnS
Zn TetrahedriteCu6Cu4(Fe2+,Zn)2Sb4S12S
AsArsenic
As ArsenopyriteFeAsS
AgSilver
Ag Electrum(Au, Ag)
Ag Freibergite(Ag,Cu,◻)10Fe22+Sb4S12
SbAntimony
Sb TetrahedriteCu6Cu4(Fe2+,Zn)2Sb4S12S
Sb Freibergite(Ag,Cu,◻)10Fe22+Sb4S12
BaBarium
Ba BaryteBaSO4
AuGold
Au GoldAu
Au Electrum(Au, Ag)
PbLead
Pb GalenaPbS

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Schalamuk, et al. (1998) 4a Reunion de Mineralogia y Metalogenia, 259-266, Bahia Blanca.
Moreira, Pilar, Fernandez, Raúl, Cabana, Cecilia and Schalamuk, Isidoro A. (2008) Structural analysis of the Jurassic mineralization from La Josefina epitermal Project (Au-Ag), Deseado Massif, Santa Cruz. Rev. Asoc. Geol. Argent. 63(2), 244-253.
Moreira, P., & Fernández, R. R. (2015). La Josefina Au–Ag deposit (Patagonia, Argentina): A Jurassic epithermal deposit formed in a hot spring environment. Ore Geology Reviews, 67, 297-313.


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