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Nuqrah deposit (Nuqrah Mine), Mintaqah Al Madinah, Saudi Arabia

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Location is approximate, estimate based on other nearby localities.
 
Latitude & Longitude (WGS84): 23° 50' 17'' North , 41° 19' 12'' East (est.)
Margin of Error:~0km
Locality type:Deposit
Köppen climate type:BWh : Hot deserts climate


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.

Regions containing this locality

Arabian Peninsula

Peninsula - 402 mineral species & varietal names listed

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List

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

10 valid minerals.

Detailed Mineral List:

Arsenopyrite
Formula: FeAsS
Reference: Al-Shanti, A. M. S. (1995): mineral deposits in the Kingdom of Saudi Arabia. Sci. Publ. Centre, King Abdulaziz University, Jeddah
Chalcopyrite
Formula: CuFeS2
Reference: Al-Shanti, A. M. S. (1995): mineral deposits in the Kingdom of Saudi Arabia. Sci. Publ. Centre, King Abdulaziz University, Jeddah; Nehlig, P., Salpeteur, I., Asfirane, F., Bouchot, V., Eberlé, J. M., & Genna, A. (1999). The Mineral Potential of the Arabian Shield: A reassessment. In Proceedings of the IUGS/UNESCO Meeting on the “Base and Precious Metal Deposits in the Arabian Shield”, Jeddah, November (pp. 12-19).
'Chlorite Group'
Reference: Al-Shanti, A. M. S. (1995): mineral deposits in the Kingdom of Saudi Arabia. Sci. Publ. Centre, King Abdulaziz University, Jeddah
Galena
Formula: PbS
Reference: Al-Shanti, A. M. S. (1995): mineral deposits in the Kingdom of Saudi Arabia. Sci. Publ. Centre, King Abdulaziz University, Jeddah; Nehlig, P., Salpeteur, I., Asfirane, F., Bouchot, V., Eberlé, J. M., & Genna, A. (1999). The Mineral Potential of the Arabian Shield: A reassessment. In Proceedings of the IUGS/UNESCO Meeting on the “Base and Precious Metal Deposits in the Arabian Shield”, Jeddah, November (pp. 12-19).
Gold
Formula: Au
Reference: Al-Shanti, A. M. S. (1995): mineral deposits in the Kingdom of Saudi Arabia. Sci. Publ. Centre, King Abdulaziz University, Jeddah
Graphite
Formula: C
Reference: Al-Shanti, A. M. S. (1995): mineral deposits in the Kingdom of Saudi Arabia. Sci. Publ. Centre, King Abdulaziz University, Jeddah
Linnaeite
Formula: Co2+Co3+2S4
Reference: Nehlig, P., Salpeteur, I., Asfirane, F., Bouchot, V., Eberlé, J. M., & Genna, A. (1999). The Mineral Potential of the Arabian Shield: A reassessment. In Proceedings of the IUGS/UNESCO Meeting on the “Base and Precious Metal Deposits in the Arabian Shield”, Jeddah, November (pp. 12-19).
Molybdenite
Formula: MoS2
Reference: Al-Shanti, A. M. S. (1995): mineral deposits in the Kingdom of Saudi Arabia. Sci. Publ. Centre, King Abdulaziz University, Jeddah; Nehlig, P., Salpeteur, I., Asfirane, F., Bouchot, V., Eberlé, J. M., & Genna, A. (1999). The Mineral Potential of the Arabian Shield: A reassessment. In Proceedings of the IUGS/UNESCO Meeting on the “Base and Precious Metal Deposits in the Arabian Shield”, Jeddah, November (pp. 12-19).
Pyrite
Formula: FeS2
Reference: Al-Shanti, A. M. S. (1995): mineral deposits in the Kingdom of Saudi Arabia. Sci. Publ. Centre, King Abdulaziz University, Jeddah; Nehlig, P., Salpeteur, I., Asfirane, F., Bouchot, V., Eberlé, J. M., & Genna, A. (1999). The Mineral Potential of the Arabian Shield: A reassessment. In Proceedings of the IUGS/UNESCO Meeting on the “Base and Precious Metal Deposits in the Arabian Shield”, Jeddah, November (pp. 12-19).
Pyrrhotite
Formula: Fe7S8
Reference: Al-Shanti, A. M. S. (1995): mineral deposits in the Kingdom of Saudi Arabia. Sci. Publ. Centre, King Abdulaziz University, Jeddah
Sphalerite
Formula: ZnS
Reference: Al-Shanti, A. M. S. (1995): mineral deposits in the Kingdom of Saudi Arabia. Sci. Publ. Centre, King Abdulaziz University, Jeddah; Nehlig, P., Salpeteur, I., Asfirane, F., Bouchot, V., Eberlé, J. M., & Genna, A. (1999). The Mineral Potential of the Arabian Shield: A reassessment. In Proceedings of the IUGS/UNESCO Meeting on the “Base and Precious Metal Deposits in the Arabian Shield”, Jeddah, November (pp. 12-19).

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
'Gold'1.AA.05Au
'Graphite'1.CB.05aC
Group 2 - Sulphides and Sulfosalts
'Arsenopyrite'2.EB.20FeAsS
'Chalcopyrite'2.CB.10aCuFeS2
'Galena'2.CD.10PbS
'Linnaeite'2.DA.05Co2+Co3+2S4
'Molybdenite'2.EA.30MoS2
'Pyrite'2.EB.05aFeS2
'Pyrrhotite'2.CC.10Fe7S8
'Sphalerite'2.CB.05aZnS
Unclassified Minerals, Rocks, etc.
'Chlorite Group'-

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
Graphite1.3.6.2C
Group 2 - SULFIDES
AmXp, with m:p = 1:1
Galena2.8.1.1PbS
Pyrrhotite2.8.10.1Fe7S8
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 3:4
Linnaeite2.10.1.1Co2+Co3+2S4
AmBnXp, with (m+n):p = 1:2
Arsenopyrite2.12.4.1FeAsS
Molybdenite2.12.10.1MoS2
Pyrite2.12.1.1FeS2
Unclassified Minerals, Rocks, etc.
'Chlorite Group'-

List of minerals for each chemical element

CCarbon
C GraphiteC
SSulfur
S ArsenopyriteFeAsS
S ChalcopyriteCuFeS2
S GalenaPbS
S LinnaeiteCo2+Co23+S4
S MolybdeniteMoS2
S PyriteFeS2
S PyrrhotiteFe7S8
S SphaleriteZnS
FeIron
Fe ArsenopyriteFeAsS
Fe ChalcopyriteCuFeS2
Fe PyriteFeS2
Fe PyrrhotiteFe7S8
CoCobalt
Co LinnaeiteCo2+Co23+S4
CuCopper
Cu ChalcopyriteCuFeS2
ZnZinc
Zn SphaleriteZnS
AsArsenic
As ArsenopyriteFeAsS
MoMolybdenum
Mo MolybdeniteMoS2
AuGold
Au GoldAu
PbLead
Pb GalenaPbS

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
- Mining Annual Review (1985): 475.
- Sabir H. (1979): Precambrian polymetallic sulfide deposits in Saudi Arabia and their metallogenic significance. In: Evolution and mineralization of the Arabian-Nubian shield. Proceedings from a symposyum convened by Ahmad M. S. Al-Shanti, Institute of Applied Geology, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia, Volume 2, 83-92.

Localities in this Region
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Saudi Arabia

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