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Dar al Gani 670 Martian meteorite (DaG 670), Dar al Gani, Al Jufrah District, Libyai
Regional Level Types
Dar al Gani 670 Martian meteorite (DaG 670)Meteorite Fall Location
Dar al Gani- not defined -
Al Jufrah DistrictDistrict
LibyaCountry

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Location is approximate, estimate based on other nearby localities.
 
Latitude & Longitude (WGS84): 27° North , 16° East (est.)
Margin of Error:~1km
Locality type:Meteorite Fall Location
Meteorite Class:Shergottite meteorite
Meteoritical Society Class:Martian (shergottite)
Metbull:View entry in Meteoritical Bulletin Database
Origin locality:Mars
Köppen climate type:BWh : Hot deserts climate


Martian basalt (shergottite [olivine-phyric] W3). Found in 1999.
Dar al Gani 670.

A dark-brown stone, broken into three adjoining pieces, with a total mass of 1619 g was found in the Dar al Gani region. Mineralogy and classification (L. Folco, MNA-SI): centimeter-sized patches of fusion crust are present on the external surfaces; porphyritic texture consisting of millimeter-sized phenocrysts of brown olivine (Fo58–80) set in a fine-grained basaltic groundmass of tabular pyroxene and interstitial feldspathic glass (An52–72Or0–1); pyroxene is primarily pigeonite (En56–66Wo9–13) with subordinate enstatite (En73–82Wo2– 3) and augite (En48–50Wo31–36); other minerals are chromite, titanian chromite, ilmenite, merrillite, and pyrrhotite; shock features include strong mosaicism and planar deformation in olivine, undulose extinction and twinning in pyroxene, and abundant impact-melt pockets and veinlets; pervasive veins filled in by calcite are due to terrestrial weathering. Oxygen isotopes (A. Sexton and I. A. Franchi, OU): δ17O = +2.83‰, δ18O = +4.95‰, Δ17O = +0.26‰. The petrography and level of terrestrial weathering are essentially identical to those of DaG 476 and DaG 489, and the three are very likely paired. Specimens: main mass with anonymous finder; 11.9 g and one polished thin section at MNA-SI.

Regions containing this locality

African PlateTectonic Plate
Sahara Desert, North AfricaDesert

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


7 valid minerals.

Meteorite/Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
Reference: Meteoritical Bulletin 84 (Aug.2000); Grady, M. M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pages.
Chromite
Formula: Fe2+Cr3+2O4
Reference: Meteoritical Bulletin 84 (Aug.2000); Grady, M. M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pages.
Enstatite
Formula: MgSiO3
Reference: Meteoritical Bulletin 84 (Aug.2000); Grady, M. M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pages.
'Fayalite-Forsterite Series'
Description: Olivine (Fa20-43)w. strong mosaicism.
Reference: Grady, M. M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pages.
Ilmenite
Formula: Fe2+TiO3
Reference: Meteoritical Bulletin 84 (Aug.2000); Grady, M. M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pages.
'Maskelynite'
Reference: Grady, M. M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pages.
Merrillite
Formula: Ca9NaMg(PO4)7
Reference: Meteoritical Bulletin 84 (Aug.2000); Grady, M. M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pages.
Pigeonite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
Reference: Meteoritical Bulletin 84 (Aug.2000); Grady, M. M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pages.
Pyrrhotite
Formula: Fe7S8
Description: Pyrrhotite as µ-scale blebs.
Reference: Meteoritical Bulletin 84 (Aug.2000); Grady, M. M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pages.

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Pyrrhotite2.CC.10Fe7S8
Group 4 - Oxides and Hydroxides
Chromite4.BB.05Fe2+Cr3+2O4
Ilmenite4.CB.05Fe2+TiO3
Group 8 - Phosphates, Arsenates and Vanadates
Merrillite8.AC.45Ca9NaMg(PO4)7
Group 9 - Silicates
Augite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
Enstatite9.DA.05MgSiO3
Pigeonite9.DA.10(CaxMgyFez)(Mgy1Fez1)Si2O6
Unclassified Minerals, Rocks, etc.
'Fayalite-Forsterite Series'-
'Maskelynite'-

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmXp, with m:p = 1:1
Pyrrhotite2.8.10.1Fe7S8
Group 4 - SIMPLE OXIDES
A2X3
Ilmenite4.3.5.1Fe2+TiO3
Group 7 - MULTIPLE OXIDES
AB2X4
Chromite7.2.3.3Fe2+Cr3+2O4
Group 38 - ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
(AB)3(XO4)2
Merrillite38.3.4.4Ca9NaMg(PO4)7
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Augite65.1.3a.3(CaxMgyFez)(Mgy1Fez1)Si2O6
Enstatite65.1.2.1MgSiO3
Pigeonite65.1.1.4(CaxMgyFez)(Mgy1Fez1)Si2O6
Unclassified Minerals, Mixtures, etc.
'Fayalite-Forsterite Series'-
'Maskelynite'-

List of minerals for each chemical element

OOxygen
O Pigeonite(CaxMgyFez)(Mgy1Fez1)Si2O6
O EnstatiteMgSiO3
O Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
O ChromiteFe2+Cr23+O4
O IlmeniteFe2+TiO3
O MerrilliteCa9NaMg(PO4)7
NaSodium
Na MerrilliteCa9NaMg(PO4)7
MgMagnesium
Mg Pigeonite(CaxMgyFez)(Mgy1Fez1)Si2O6
Mg EnstatiteMgSiO3
Mg Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Mg MerrilliteCa9NaMg(PO4)7
SiSilicon
Si Pigeonite(CaxMgyFez)(Mgy1Fez1)Si2O6
Si EnstatiteMgSiO3
Si Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
PPhosphorus
P MerrilliteCa9NaMg(PO4)7
SSulfur
S PyrrhotiteFe7S8
CaCalcium
Ca Pigeonite(CaxMgyFez)(Mgy1Fez1)Si2O6
Ca Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Ca MerrilliteCa9NaMg(PO4)7
TiTitanium
Ti IlmeniteFe2+TiO3
CrChromium
Cr ChromiteFe2+Cr23+O4
FeIron
Fe Pigeonite(CaxMgyFez)(Mgy1Fez1)Si2O6
Fe Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Fe ChromiteFe2+Cr23+O4
Fe IlmeniteFe2+TiO3
Fe PyrrhotiteFe7S8

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Grossman, J.N. and Zipfel, J. (2000) The Meteoritical Bulletin, No. 84, 2000 September. Meteoritics & Planetary Science 35, #9 (Suppl.): A199-A225. (Sept 2000).
Grady, M.M., Pratesi, G., and Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pp.

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