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Santa Clara Mine (Macacona Mine), Puntarenas Province, Costa Ricai
Regional Level Types
Santa Clara Mine (Macacona Mine)Mine
Puntarenas ProvinceProvince
Costa RicaCountry

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Key
Latitude & Longitude (WGS84):
10° 0' 33'' North , 84° 36' 40'' West
Latitude & Longitude (decimal):
Locality type:
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Macacona840 (2016)3.2km
Esparza15,575 (2016)6.1km
Desamparados14,448 (2018)13.4km
Orotina6,135 (2016)14.5km
Miramar6,540 (2018)15.9km
Name(s) in local language(s):
Mina Santa Clara (Mina Macacona), Provincia de Puntarenas, Costa Rica


A gold property located 65 km W of San José in Macacona district, canton of Esparza, Puntarenas province.

Minera Macacona Ltda., a joint venture of United Hearne Resources (60%) & Canadian Barranca Corp. Ltd. (40%), began its evaluation of the Santa Clara deposit in 1975. The open pit gold mine was opened in February 1981 with a 500 tons/day ore feed capacity. Gold production through April 1988 totals 39,000 ounces. The mine closed in August 1989, after oxide reserves were exhausted. A 1988 reserve evaluation reports 2,925,000 tons of 0.053 opt gold in the Santa Clara mine area. Most of this reserve is unoxidized.

Santa Clara is a shallow epithermal vein and weak vein stockwork hosted by the Mio-Pliocene Aguacate Formation. Host rocks include basaltic andesite tuff breccias and flows. Ore is hosted by a steeply dipping fault and hanging-wall splits and is oxidized to a depth of 50 m or more. Free gold is associated with limonite and pyrolusite in a gangue of vuggy, crustiform banded, chalcedonic quartz-filled veins and fault breccias. Beneath the oxidized zone, gold is associated with pyrite and minor chalcopyrite and covellite.

Regions containing this locality

Central AmericaRegion
Panama PlateTectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


12 valid minerals.

Detailed Mineral List:

Arsenic
Formula: As
Description: Found by Daniele Trogolo Got in 1988
Reference: Paolo Bosio Collection
Arsenolite
Formula: As2O3
Description: Found by Daniele Trogolo Got in 1988
Reference: Paolo Bosio Collection
Chalcopyrite
Formula: CuFeS2
Reference: Nelson, C.E. (1990): Bulk mineable epithermal precious metal deposits of the Circum-Carribean region. In: Hausen, D.M., Halbe, D.N., Petersen, E.U., Tafuri, W.J., eds., Gold ’90 – Symposium Proceedings. Society for Mining, Metallurgy, and Exploration, Littleton, Colorado, pages 149-161.
Covellite
Formula: CuS
Reference: Nelson, C.E. (1990): Bulk mineable epithermal precious metal deposits of the Circum-Carribean region. In: Hausen, D.M., Halbe, D.N., Petersen, E.U., Tafuri, W.J., eds., Gold ’90 – Symposium Proceedings. Society for Mining, Metallurgy, and Exploration, Littleton, Colorado, pages 149-161.
Dolomite
Formula: CaMg(CO3)2
Reference: Paolo Bosio Collection
Gold
Formula: Au
Reference: Mining Annual Review (1985): 357; Nelson, C.E. (1990): Bulk mineable epithermal precious metal deposits of the Circum-Carribean region. In: Hausen, D.M., Halbe, D.N., Petersen, E.U., Tafuri, W.J., eds., Gold ’90 – Symposium Proceedings. Society for Mining, Metallurgy, and Exploration, Littleton, Colorado, pages 149-161.
'Limonite'
Formula: (Fe,O,OH,H2O)
Reference: Nelson, C.E. (1990): Bulk mineable epithermal precious metal deposits of the Circum-Carribean region. In: Hausen, D.M., Halbe, D.N., Petersen, E.U., Tafuri, W.J., eds., Gold ’90 – Symposium Proceedings. Society for Mining, Metallurgy, and Exploration, Littleton, Colorado, pages 149-161.
Marcasite
Formula: FeS2
Reference: www.mineralmundi.com
Pararealgar
Formula: As4S4
Description: Found by Daniele Trogolo Got in 1988
Reference: Paolo Bosio Collection
Pyrite
Formula: FeS2
Reference: www.mineralmundi.com; Nelson, C.E. (1990): Bulk mineable epithermal precious metal deposits of the Circum-Carribean region. In: Hausen, D.M., Halbe, D.N., Petersen, E.U., Tafuri, W.J., eds., Gold ’90 – Symposium Proceedings. Society for Mining, Metallurgy, and Exploration, Littleton, Colorado, pages 149-161.
Pyrolusite
Formula: Mn4+O2
Reference: Nelson, C.E. (1990): Bulk mineable epithermal precious metal deposits of the Circum-Carribean region. In: Hausen, D.M., Halbe, D.N., Petersen, E.U., Tafuri, W.J., eds., Gold ’90 – Symposium Proceedings. Society for Mining, Metallurgy, and Exploration, Littleton, Colorado, pages 149-161.
Quartz
Formula: SiO2
Reference: www.mineralmundi.com; Nelson, C.E. (1990): Bulk mineable epithermal precious metal deposits of the Circum-Carribean region. In: Hausen, D.M., Halbe, D.N., Petersen, E.U., Tafuri, W.J., eds., Gold ’90 – Symposium Proceedings. Society for Mining, Metallurgy, and Exploration, Littleton, Colorado, pages 149-161.
Quartz var: Chalcedony
Formula: SiO2
Reference: Nelson, C.E. (1990): Bulk mineable epithermal precious metal deposits of the Circum-Carribean region. In: Hausen, D.M., Halbe, D.N., Petersen, E.U., Tafuri, W.J., eds., Gold ’90 – Symposium Proceedings. Society for Mining, Metallurgy, and Exploration, Littleton, Colorado, pages 149-161.
Realgar
Formula: As4S4
Description: Found by Daniele Trogolo Got in 1988
Reference: Paolo Bosio Collection

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Arsenic1.CA.05As
Gold1.AA.05Au
Group 2 - Sulphides and Sulfosalts
Chalcopyrite2.CB.10aCuFeS2
Covellite2.CA.05aCuS
Marcasite2.EB.10aFeS2
Pararealgar2.FA.15bAs4S4
Pyrite2.EB.05aFeS2
Realgar2.FA.15aAs4S4
Group 4 - Oxides and Hydroxides
Arsenolite4.CB.50As2O3
Pyrolusite4.DB.05Mn4+O2
Quartz4.DA.05SiO2
var: Chalcedony4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Dolomite5.AB.10CaMg(CO3)2
Unclassified Minerals, Rocks, etc.
'Limonite'-(Fe,O,OH,H2O)

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
Arsenic1.3.1.1As
Group 2 - SULFIDES
AmXp, with m:p = 1:1
Covellite2.8.12.1CuS
Pararealgar2.8.21.2As4S4
Realgar2.8.21.1As4S4
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 1:2
Marcasite2.12.2.1FeS2
Pyrite2.12.1.1FeS2
Group 4 - SIMPLE OXIDES
A2X3
Arsenolite4.3.9.1As2O3
AX2
Pyrolusite4.4.1.4Mn4+O2
Group 14 - ANHYDROUS NORMAL CARBONATES
AB(XO3)2
Dolomite14.2.1.1CaMg(CO3)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
'Limonite'-(Fe,O,OH,H2O)
Quartz
var: Chalcedony
-SiO2

List of minerals for each chemical element

HHydrogen
H Limonite(Fe,O,OH,H2O)
CCarbon
C DolomiteCaMg(CO3)2
OOxygen
O QuartzSiO2
O DolomiteCaMg(CO3)2
O Limonite(Fe,O,OH,H2O)
O PyrolusiteMn4+O2
O Quartz (var: Chalcedony)SiO2
O ArsenoliteAs2O3
MgMagnesium
Mg DolomiteCaMg(CO3)2
SiSilicon
Si QuartzSiO2
Si Quartz (var: Chalcedony)SiO2
SSulfur
S MarcasiteFeS2
S PyriteFeS2
S RealgarAs4S4
S PararealgarAs4S4
S ChalcopyriteCuFeS2
S CovelliteCuS
CaCalcium
Ca DolomiteCaMg(CO3)2
MnManganese
Mn PyrolusiteMn4+O2
FeIron
Fe MarcasiteFeS2
Fe PyriteFeS2
Fe Limonite(Fe,O,OH,H2O)
Fe ChalcopyriteCuFeS2
CuCopper
Cu ChalcopyriteCuFeS2
Cu CovelliteCuS
AsArsenic
As ArsenicAs
As RealgarAs4S4
As PararealgarAs4S4
As ArsenoliteAs2O3
AuGold
Au GoldAu

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Mining Annual Review (1985) 357.
Nelson, C.E. (1990) Bulk mineable epithermal precious metal deposits of the Circum-Carribean region. In: Hausen, D.M., Halbe, D.N., Petersen, E.U., and Tafuri, W.J. (eds.) Gold ’90 – Symposium Proceedings. Society for Mining, Metallurgy, and Exploration, Littleton, Colorado, pp. 149-161.


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