Al Ajarda Complex, 'Asir Region, Saudi Arabiai
| Regional Level Types | |
|---|---|
| Al Ajarda Complex | Complex |
| 'Asir Region | Region |
| Saudi Arabia | Country |
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Latitude & Longitude (WGS84):
19° 1' North , 41° 57' East
Latitude & Longitude (decimal):
Type:
KΓΆppen climate type:
Other/historical names associated with this locality:
Lakatah complex
Layered complex with a core of gabbro passing into pyroxenite with an external rim of peralkaline syenite, described as ring dike by Greenwood (1979), varying in width from 2 to over 3 km.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
4 valid minerals.
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 DiagramDetailed Mineral List:
| β Aegirine-augite Formula: (NaaCabFe2+cMgd)(Fe3+eAlfFe2+gMgh)Si2O6 Reference: Al-Koulak, M.Z.M.I. 1985. Geology and petrology of the Al Ajardah ring complex, and Bani Amr syenites of the southern Arabian Shield. PhD thesis, Faculty of Earth Sciences, King Abdulaziz University.
Greenwood, W. R. (1979). Geologic map of the An Nimas quadrangle, sheet 19/42C, Kingdom of Saudi Arabia. Geologic Map GM-37 (with Explanation). Ministry of Petroleum and Mineral Resources, Directorate General of Mineral Resources of the Kingdom of Saudi Arabia, Jeddah.
Stoeser, D. B. (1986). Distribution and tectonic setting of plutonic rocks of the Arabian Shield. Journal of African Earth Sciences (1983), 4, 21-46. |
| β 'Apatite' Formula: Ca5(PO4)3(Cl/F/OH) Reference: Al-Koulak, M.Z.M.I. 1985. Geology and petrology of the Al Ajardah ring complex, and Bani Amr syenites of the southern Arabian Shield. PhD thesis, Faculty of Earth Sciences, King Abdulaziz University.
Greenwood, W. R. (1979). Geologic map of the An Nimas quadrangle, sheet 19/42C, Kingdom of Saudi Arabia. Geologic Map GM-37 (with Explanation). Ministry of Petroleum and Mineral Resources, Directorate General of Mineral Resources of the Kingdom of Saudi Arabia, Jeddah.
Stoeser, D. B. (1986). Distribution and tectonic setting of plutonic rocks of the Arabian Shield. Journal of African Earth Sciences (1983), 4, 21-46. |
| β Augite Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6 Reference: Al-Koulak, M.Z.M.I. 1985. Geology and petrology of the Al Ajardah ring complex, and Bani Amr syenites of the southern Arabian Shield. PhD thesis, Faculty of Earth Sciences, King Abdulaziz University.
Greenwood, W. R. (1979). Geologic map of the An Nimas quadrangle, sheet 19/42C, Kingdom of Saudi Arabia. Geologic Map GM-37 (with Explanation). Ministry of Petroleum and Mineral Resources, Directorate General of Mineral Resources of the Kingdom of Saudi Arabia, Jeddah.
Stoeser, D. B. (1986). Distribution and tectonic setting of plutonic rocks of the Arabian Shield. Journal of African Earth Sciences (1983), 4, 21-46. |
| β 'Biotite' Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 Reference: Al-Koulak, M.Z.M.I. 1985. Geology and petrology of the Al Ajardah ring complex, and Bani Amr syenites of the southern Arabian Shield. PhD thesis, Faculty of Earth Sciences, King Abdulaziz University.
Greenwood, W. R. (1979). Geologic map of the An Nimas quadrangle, sheet 19/42C, Kingdom of Saudi Arabia. Geologic Map GM-37 (with Explanation). Ministry of Petroleum and Mineral Resources, Directorate General of Mineral Resources of the Kingdom of Saudi Arabia, Jeddah.
Stoeser, D. B. (1986). Distribution and tectonic setting of plutonic rocks of the Arabian Shield. Journal of African Earth Sciences (1983), 4, 21-46. |
| β Microcline Formula: K(AlSi3O8) Reference: Al-Koulak, M.Z.M.I. 1985. Geology and petrology of the Al Ajardah ring complex, and Bani Amr syenites of the southern Arabian Shield. PhD thesis, Faculty of Earth Sciences, King Abdulaziz University.
Greenwood, W. R. (1979). Geologic map of the An Nimas quadrangle, sheet 19/42C, Kingdom of Saudi Arabia. Geologic Map GM-37 (with Explanation). Ministry of Petroleum and Mineral Resources, Directorate General of Mineral Resources of the Kingdom of Saudi Arabia, Jeddah.
Stoeser, D. B. (1986). Distribution and tectonic setting of plutonic rocks of the Arabian Shield. Journal of African Earth Sciences (1983), 4, 21-46. |
| β Quartz Formula: SiO2 Reference: Al-Koulak, M.Z.M.I. 1985. Geology and petrology of the Al Ajardah ring complex, and Bani Amr syenites of the southern Arabian Shield. PhD thesis, Faculty of Earth Sciences, King Abdulaziz University.
Greenwood, W. R. (1979). Geologic map of the An Nimas quadrangle, sheet 19/42C, Kingdom of Saudi Arabia. Geologic Map GM-37 (with Explanation). Ministry of Petroleum and Mineral Resources, Directorate General of Mineral Resources of the Kingdom of Saudi Arabia, Jeddah.
Stoeser, D. B. (1986). Distribution and tectonic setting of plutonic rocks of the Arabian Shield. Journal of African Earth Sciences (1983), 4, 21-46. |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| β | Quartz | 4.DA.05 | SiO2 |
| Group 9 - Silicates | |||
| β | Aegirine-augite | 9.DA.20 | (NaaCabFe2+cMgd)(Fe3+eAlfFe2+gMgh)Si2O6 |
| β | Augite | 9.DA.15 | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| β | Microcline | 9.FA.30 | K(AlSi3O8) |
| Unclassified Minerals, Rocks, etc. | |||
| β | 'Apatite' | - | Ca5(PO4)3(Cl/F/OH) |
| β | 'Biotite' | - | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | β Apatite | Ca5(PO4)3(Cl/F/OH) |
| H | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
| O | Oxygen | |
| O | β Microcline | K(AlSi3O8) |
| O | β Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| O | β Aegirine-augite | (NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6 |
| O | β Quartz | SiO2 |
| O | β Apatite | Ca5(PO4)3(Cl/F/OH) |
| O | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
| F | Fluorine | |
| F | β Apatite | Ca5(PO4)3(Cl/F/OH) |
| F | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
| Na | Sodium | |
| Na | β Aegirine-augite | (NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6 |
| Mg | Magnesium | |
| Mg | β Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Mg | β Aegirine-augite | (NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6 |
| Mg | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
| Al | Aluminium | |
| Al | β Microcline | K(AlSi3O8) |
| Al | β Aegirine-augite | (NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6 |
| Al | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
| Si | Silicon | |
| Si | β Microcline | K(AlSi3O8) |
| Si | β Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Si | β Aegirine-augite | (NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6 |
| Si | β Quartz | SiO2 |
| Si | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
| P | Phosphorus | |
| P | β Apatite | Ca5(PO4)3(Cl/F/OH) |
| Cl | Chlorine | |
| Cl | β Apatite | Ca5(PO4)3(Cl/F/OH) |
| K | Potassium | |
| K | β Microcline | K(AlSi3O8) |
| K | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
| Ca | Calcium | |
| Ca | β Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Ca | β Aegirine-augite | (NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6 |
| Ca | β Apatite | Ca5(PO4)3(Cl/F/OH) |
| Ti | Titanium | |
| Ti | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
| Fe | Iron | |
| Fe | β Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Fe | β Aegirine-augite | (NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6 |
| Fe | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
Geochronology
Mineralization age: Neoproterozoic : 557 Β± 8 MaImportant note: This table is based only on rock and mineral ages recorded on mindat.org for this locality and is not necessarily a complete representation of the geochronology, but does give an indication of possible mineralization events relevant to this locality. As more age information is added this table may expand in the future. A break in the table simply indicates a lack of data entered here, not necessarily a break in the geologic sequence. Grey background entries are from different, related, localities.
| Geologic Time | Rocks, Minerals and Events | ||||||
|---|---|---|---|---|---|---|---|
| Precambrian | |||||||
| Proterozoic | |||||||
| Neoproterozoic | |||||||
| Ediacaran |
| ||||||
References
Sort by
Year (asc) Year (desc) Author (A-Z) Author (Z-A)Woolley A.R. (2019) Alkaline Rocks and Carbonatites of the World. Part 4: Antarctica, Asia and Europe, p.201.
Al-Koulak, M.Z.M.I. 1985. Geology and petrology of the Al Ajardah ring complex, and Bani Amr syenites of the southern Arabian Shield. PhD thesis, Faculty of Earth Sciences, King Abdulaziz University.
Greenwood, W. R. (1979). Geologic map of the An Nimas quadrangle, sheet 19/42C, Kingdom of Saudi Arabia. Geologic Map GM-37 (with Explanation). Ministry of Petroleum and Mineral Resources, Directorate General of Mineral Resources of the Kingdom of Saudi Arabia, Jeddah.
Stoeser, D. B. (1986). Distribution and tectonic setting of plutonic rocks of the Arabian Shield. Journal of African Earth Sciences (1983), 4, 21-46.
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