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Tanama Deposit, Utuado, Puerto Rico, USAi
| Regional Level Types | |
|---|---|
| Tanama Deposit | Occurrence |
| Utuado | Municipality |
| Puerto Rico | Unincorporated Territory |
| USA | Country |
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Latitude & Longitude (WGS84):
18° 15' 32'' North , 66° 47' 27'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Structure: The Mineralized Pluton Is In An Elongate Cluster Of Stocks Aligned Perpendicular To The Regional Grain Of The Island.
Alteration: Three Alteration Zones Are Present:(1)An Inner, Amphibole-Dominated Assemblage Containing Abundant Magnetite And Of Low Copper Grade;(2)An Outer, Chlorite-Dominated Assemblage, Locally Containing Traces Of Hydrothermal Biotite And Potassium Feldspar And Abundant Chalcopyrite Replacing Magnetite; And (3)An Upper, Sericite-Clay-Calcite-Pyrite Zone
Tectonics: Gold-Rich Porphyry System In Low-Potassium Island-Arc Environment
Deposit: The deposit consists of two ore bodies, separated by about 100 m of weakly mineralized rocks. The deposit contains abundant quartz veins and disseminated chalcopyrite and has a secondary-enrichment blanket containing various copper sulfide minerals. [previous updaters: bawiec, walter j., 90 08, USGS; schellekens, j.h., 91 07, upr.]
Deposit type: Porphyry Cu-Au
Development: First drilled in late 1960. By 1965, 155 holes, aggregating 44,000 m, had been drilled, and the tonnage had been determined.
Geology: The stock intrudes basaltic rocks of cretaceous age and felsic volcanic rocks of early eocene age.
Ore(s): Chalcopyrite Is More Commonly Disseminated Than Veinlet Controlled
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
3 valid minerals.
Rock Types Recorded
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ Chalcopyrite Formula: CuFeS2 References: |
| ⓘ Magnetite Formula: Fe2+Fe3+2O4 References: |
| ⓘ Pyrite Formula: FeS2 References: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Magnetite | Fe2+Fe23+O4 |
| S | Sulfur | |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Pyrite | FeS2 |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Magnetite | Fe2+Fe23+O4 |
| Fe | ⓘ Pyrite | FeS2 |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
Other Databases
| Link to USGS MRDS: | 10085423 |
|---|
Other Regions, Features and Areas containing this locality
Caribbean PlateTectonic Plate
North America
- Central AmericaSubregion
North America Plate
- Greater Antilles ArcVolcanic Arc
The CaribbeanRegion
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