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Nuqrah deposit (Nuqrah Mine), Medina Region, Saudi Arabiai
| Regional Level Types | |
|---|---|
| Nuqrah deposit (Nuqrah Mine) | Deposit |
| Medina Region | Region |
| Saudi Arabia | Country |
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Latitude & Longitude:
24° North , 39° East (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~377km
Type:
An ancient mine.
Sedimentary/exhalative-rock (Sedex) gold and base-metals deposit.
At Nuqrah the mineralisation comprises two tabular bodies of massive sulfides, namely North and South Nuqrah, which are located between mafic pyroclastics and flows of the hanging wall, and chloritised rhyolitic tuff and breccia of the footwall. These rocks are tightly folded, faulted, and locally overturned at North Nuqrah.
At both North and South Nuqrah the mineralisation is confined to a narrow stratigraphic horizon comprising graphitic tuff, rhyolitic crystal and lapilli tuff, chloritic tuff, and calcareous dolomite marble.
The mineralisation is fine grained and displays well-developed banding; towards the lower part of the deposit, however, brecciated and fragmental ore predominates. The main ore minerals, in their order of abundance, are sphalerite, pyrite, galena, and chalcopyrite, associated with minor tetrahedrite, arsenopyrite, bournonite, menehinite, polybasite, pyrrhotite, mackinawite, altaite, hessite, tetradymite and gold together with traces of magnetite and ilmenite. The gangue mainly consists of graphyte and carbonate (dolomite). Gold is very argentiferous (electrum variety) and appears in intimate association with hessite.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
Mineral list contains entries from the region specified including sub-localities10 valid minerals.
Detailed Mineral List:
| ⓘ Arsenopyrite Formula: FeAsS |
| ⓘ Chalcopyrite Formula: CuFeS2 References: |
| ⓘ 'Chlorite Group' |
| ⓘ Galena Formula: PbS References: |
| ⓘ Graphite Formula: C |
| ⓘ Linnaeite Formula: Co2+Co3+2S4 |
| ⓘ Molybdenite Formula: MoS2 References: |
| ⓘ Native Gold Formula: Au |
| ⓘ Pyrite Formula: FeS2 References: |
| ⓘ Pyrrhotite Formula: Fe1-xS |
| ⓘ Sphalerite Formula: ZnS References: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
| ⓘ | Graphite | 1.CB.05a | C |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Sphalerite | 2.CB.05a | ZnS |
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Pyrrhotite | 2.CC.10 | Fe1-xS |
| ⓘ | Galena | 2.CD.10 | PbS |
| ⓘ | Linnaeite | 2.DA.05 | Co2+Co3+2S4 |
| ⓘ | Molybdenite | 2.EA.30 | MoS2 |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| ⓘ | Arsenopyrite | 2.EB.20 | FeAsS |
| Unclassified | |||
| ⓘ | 'Chlorite Group' | - | |
List of minerals for each chemical element
| C | Carbon | |
|---|---|---|
| C | ⓘ Graphite | C |
| S | Sulfur | |
| S | ⓘ Arsenopyrite | FeAsS |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Galena | PbS |
| S | ⓘ Linnaeite | Co2+Co23+S4 |
| S | ⓘ Molybdenite | MoS2 |
| S | ⓘ Pyrite | FeS2 |
| S | ⓘ Pyrrhotite | Fe1-xS |
| S | ⓘ Sphalerite | ZnS |
| Fe | Iron | |
| Fe | ⓘ Arsenopyrite | FeAsS |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Pyrite | FeS2 |
| Fe | ⓘ Pyrrhotite | Fe1-xS |
| Co | Cobalt | |
| Co | ⓘ Linnaeite | Co2+Co23+S4 |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Zn | Zinc | |
| Zn | ⓘ Sphalerite | ZnS |
| As | Arsenic | |
| As | ⓘ Arsenopyrite | FeAsS |
| Mo | Molybdenum | |
| Mo | ⓘ Molybdenite | MoS2 |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
| Pb | Lead | |
| Pb | ⓘ Galena | PbS |
Localities in this Region
- Medina Region
- Nuqrah deposit (Nuqrah Mine)
Other Regions, Features and Areas containing this locality
Arabian PeninsulaPeninsula
Arabian PlateTectonic Plate
- Arabian-Nubian ShieldShield
- Al Madinah TerraneVolcanic Arc
AsiaContinent
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References
