Stuckless, J. S., Hedge, C. E., Wenner, D. B., & Nkomo, I. T. (1985). Isotopic studies of postorogenic granites from the northeastern Arabian Shield, Kingdom of Saudi Arabia. United States Geological Survey, Open File Report 85-126.

Köppen climate type:

BWh : Hot deserts climate

Mindat Locality ID:

341897

Long-form identifier:

mindat:1:2:341897:3

GUID (UUID V4):

Other/historical names associated with this locality:

an namar; an nammar

Roughly square-shaped intrusion of sodic amphibole-bearing granite with margins of c. 6km (Delfour 1977; Stoeser et al. 1986), but Stuckless et al (1985) say that the pluton varies from peralkaline to weakly peralminous alkali feldpar granite.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

ⓘ 'Amphibole Supergroup'

ⓘ Riebeckite

1 valid mineral.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

ⓘ Alkali-feldspar-granite

ⓘ Granite

ⓘ 'Peralkaline alkali-feldspar-granite'

Detailed Mineral List:

ⓘ 'Amphibole Supergroup'

Formula: AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂

References:

Delfour, J. (1977). Geology of the Nuqrah quadrangle, 25E, Kingdom of Saudi Arabia. Geologic Map GM-28 (with Explanation). Ministry of Petroleum and Mineral Resources, Directorate General of Mineral Resources of the Kingdom of Saudi Arabia, Jeddah.

Stoeser, D. B., Jackson, N. J., Ramsay, C. R., Drysdall, A. R., du Bray, E. A., & Douch, C. J. (1986). Map of felsic plutonic rocks in the Arabian Shield, Kingdom of Saudi Arabia. 1:1000000 (2 sheets). J. Afr. Earth Sci., 4.

ⓘ Riebeckite

Formula: ◻[Na₂][Fe²⁺₃Fe³⁺₂]Si₈O₂₂(OH)₂

References:

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 9 - Silicates
ⓘ	Riebeckite	9.DE.25	◻[Na₂][Fe²⁺₃Fe³⁺₂]Si₈O₂₂(OH)₂
Unclassified
ⓘ	'Amphibole Supergroup'	-	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
H	ⓘ Riebeckite	◻[Na₂][Fe₃²⁺Fe₂³⁺]Si₈O₂₂(OH)₂
O	Oxygen
O	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
O	ⓘ Riebeckite	◻[Na₂][Fe₃²⁺Fe₂³⁺]Si₈O₂₂(OH)₂
F	Fluorine
F	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
Na	Sodium
Na	ⓘ Riebeckite	◻[Na₂][Fe₃²⁺Fe₂³⁺]Si₈O₂₂(OH)₂
Al	Aluminium
Al	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
Si	Silicon
Si	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
Si	ⓘ Riebeckite	◻[Na₂][Fe₃²⁺Fe₂³⁺]Si₈O₂₂(OH)₂
Cl	Chlorine
Cl	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
Ti	Titanium
Ti	ⓘ Amphibole Supergroup	AB₂C₅((Si,Al,Ti)₈O₂₂)(OH,F,Cl,O)₂
Fe	Iron
Fe	ⓘ Riebeckite	◻[Na₂][Fe₃²⁺Fe₂³⁺]Si₈O₂₂(OH)₂

Other Regions, Features and Areas containing this locality

Arabian Plate

Arabian-Nubian ShieldShield
- Afif TerraneVolcanic Arc

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Woolley, Alan R. (2019) Alkaline Rocks and Carbonatites of the World. Part 4: Antarctica, Asia and Europe (excluding the former USSR), Australasia and Oceanic Islands. The Geological Society of London. doi:10.1144/mpar4

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