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St. Mark's meteorite, Intsika Yethu Local Municipality, Chris Hani District Municipality, Eastern Cape, South Africai
Regional Level Types
St. Mark's meteoriteMeteorite Fall Location
Intsika Yethu Local MunicipalityMunicipality
Chris Hani District MunicipalityMunicipality
Eastern CapeProvince
South AfricaCountry

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Latitude & Longitude (WGS84):
32° 1' South , 27° 25' East
Latitude & Longitude (decimal):
-32.01667,27.41667
GeoHash:
G#: kd73zgs1q
GRN:
S22E17
Type:
Meteorite Fall Location
Meteorite Class:
EH5 chondrite meteorite
Meteoritical Society Class:
EH5
Metbull:
View entry in Meteoritical Bulletin Database
KΓΆppen climate type:
Cfb : Temperate oceanic climate
Nearest Settlements:
PlacePopulationDistance
Ilinge10,899 (2018)35.5km
Lady Frere25,041 (2012)38.9km
Queensdale20,009 (2018)44.4km
Mindat Locality ID:
57013
Long-form identifier:
mindat:1:2:57013:1
GUID (UUID V4):
319ac840-94ed-4e7c-92fb-dca6ca82aa50


Enstatite Chondrite, high-iron [EH5; S3]
Fall, 3 January 1903, 13.8 kg

At 11 P.M. a brite bolide was seen, four detonations were heard, and a 13.78 kg stone was seen to fall near St. Mark’s mission Station in the Transakei region. St. Mark's is now classified as an EH4 Enstatite Chondrite. Enstatite Chondrite are distinguished by their bulk chemistry, unusually earth-like oxygen isotope ratios, abundant Enstatite (an iron-free pyroxene) and several other unusual highly reduced mineral assemblages. The high-iron (EH) chemical group is further distinguished by small chondrules, metal (~10 vol%) and the invariable presence of niningerite (MgS) and perryite (a silicide). The petrologic type EH4 chondrites are characterized by abundant chondrules, homogenized olivine and recrystallized fine-grained matrix.
St. Mark’s has also experienced significant pre-terrestrial shock (Shock Stage S3)

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


15 valid minerals. 1 (TL) - type locality of valid minerals.

Meteorite/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

Detailed Mineral List:

β“˜ Alabandite
Formula: MnS
β“˜ Cohenite
Formula: Fe3C
β“˜ Cubanite
Formula: CuFe2S3
β“˜ DaubrΓ©elite
Formula: Fe2+Cr3+2S4
β“˜ Djerfisherite (TL)
Formula: K6(Fe,Cu,Ni)25S26Cl
Type Locality:
β“˜ Enstatite
Formula: Mg2Si2O6
β“˜ Graphite
Formula: C
β“˜ Iron
Formula: Fe
β“˜ Iron var. Kamacite
Formula: (Fe,Ni)
β“˜ Niningerite
Formula: (Mg,Fe2+,Mn2+)S
β“˜ Oldhamite
Formula: (Ca,Mg)S
β“˜ Perryite
Formula: (Ni,Fe)5(Si,P)2
β“˜ 'Plagioclase'
Formula: (Na,Ca)[(Si,Al)AlSi2]O8
Description: Albitic [An 14]
β“˜ Quartz
Formula: SiO2
β“˜ Schreibersite
Formula: (Fe,Ni)3P
β“˜ Sphalerite
Formula: ZnS
β“˜ Troilite
Formula: FeS

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
β“˜Iron
var. Kamacite		1.AE.05(Fe,Ni)
β“˜1.AE.05Fe
β“˜Cohenite1.BA.05Fe3C
β“˜Perryite1.BB.10(Ni,Fe)5(Si,P)2
β“˜Schreibersite1.BD.05(Fe,Ni)3P
β“˜Graphite1.CB.05aC
Group 2 - Sulphides and Sulfosalts
β“˜Sphalerite2.CB.05aZnS
β“˜Cubanite2.CB.55aCuFe2S3
β“˜Troilite2.CC.10FeS
β“˜Alabandite2.CD.10MnS
β“˜Oldhamite2.CD.10(Ca,Mg)S
β“˜Niningerite2.CD.10(Mg,Fe2+,Mn2+)S
β“˜DaubrΓ©elite2.DA.05Fe2+Cr3+2S4
β“˜Djerfisherite (TL)2.FC.05K6(Fe,Cu,Ni)25S26Cl
Group 4 - Oxides and Hydroxides
β“˜Quartz4.DA.05SiO2
Group 9 - Silicates
β“˜Enstatite9.DA.05Mg2Si2O6
Unclassified
β“˜'Plagioclase'-(Na,Ca)[(Si,Al)AlSi2]O8

List of minerals for each chemical element

CCarbon
Cβ“˜ CoheniteFe3C
Cβ“˜ GraphiteC
OOxygen
Oβ“˜ EnstatiteMg2Si2O6
Oβ“˜ QuartzSiO2
Oβ“˜ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
NaSodium
Naβ“˜ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
MgMagnesium
Mgβ“˜ EnstatiteMg2Si2O6
Mgβ“˜ Niningerite(Mg,Fe2+,Mn2+)S
Mgβ“˜ Oldhamite(Ca,Mg)S
AlAluminium
Alβ“˜ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
SiSilicon
Siβ“˜ EnstatiteMg2Si2O6
Siβ“˜ Perryite(Ni,Fe)5(Si,P)2
Siβ“˜ QuartzSiO2
Siβ“˜ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
PPhosphorus
Pβ“˜ Perryite(Ni,Fe)5(Si,P)2
Pβ“˜ Schreibersite(Fe,Ni)3P
SSulfur
Sβ“˜ AlabanditeMnS
Sβ“˜ CubaniteCuFe2S3
Sβ“˜ DaubrΓ©eliteFe2+Cr23+S4
Sβ“˜ DjerfisheriteK6(Fe,Cu,Ni)25S26Cl
Sβ“˜ Niningerite(Mg,Fe2+,Mn2+)S
Sβ“˜ Oldhamite(Ca,Mg)S
Sβ“˜ SphaleriteZnS
Sβ“˜ TroiliteFeS
ClChlorine
Clβ“˜ DjerfisheriteK6(Fe,Cu,Ni)25S26Cl
KPotassium
Kβ“˜ DjerfisheriteK6(Fe,Cu,Ni)25S26Cl
CaCalcium
Caβ“˜ Oldhamite(Ca,Mg)S
Caβ“˜ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
CrChromium
Crβ“˜ DaubrΓ©eliteFe2+Cr23+S4
MnManganese
Mnβ“˜ AlabanditeMnS
Mnβ“˜ Niningerite(Mg,Fe2+,Mn2+)S
FeIron
Feβ“˜ CoheniteFe3C
Feβ“˜ CubaniteCuFe2S3
Feβ“˜ DaubrΓ©eliteFe2+Cr23+S4
Feβ“˜ DjerfisheriteK6(Fe,Cu,Ni)25S26Cl
Feβ“˜ IronFe
Feβ“˜ Iron var. Kamacite(Fe,Ni)
Feβ“˜ Niningerite(Mg,Fe2+,Mn2+)S
Feβ“˜ Perryite(Ni,Fe)5(Si,P)2
Feβ“˜ Schreibersite(Fe,Ni)3P
Feβ“˜ TroiliteFeS
NiNickel
Niβ“˜ DjerfisheriteK6(Fe,Cu,Ni)25S26Cl
Niβ“˜ Iron var. Kamacite(Fe,Ni)
Niβ“˜ Perryite(Ni,Fe)5(Si,P)2
Niβ“˜ Schreibersite(Fe,Ni)3P
CuCopper
Cuβ“˜ CubaniteCuFe2S3
Cuβ“˜ DjerfisheriteK6(Fe,Cu,Ni)25S26Cl
ZnZinc
Znβ“˜ SphaleriteZnS

Other Regions, Features and Areas containing this locality

African PlateTectonic Plate
South Africa

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

Mason, B. H. (1966). The Enstatite Chondrites. Geochimica et Cosmochimica Acta: 30: 23-30.
Fuchs, L. H. (1966) Djerfisherite, Alkali Copper-Iron Sulfide: A New Mineral from Enstatite Chondrites. Science, 153 (3732). 166-167 doi:10.1126/science.153.3732.166
Keil, K., Snetsinger, K.G., (1966) Niningerite: a new meteoritic sulfide. Science: 155: 451-453.
Ramdohr, Paul (1972) The Opaque Minerals in Stony Meteorites. De Gruyter. doi:10.1515/9783112651025
Leitch, C.A., Smith, J.V., (1982) Petrography, mineral chemistry and origin of Type I enstatite chondrites. Geochimica et Cosmochimica Acta 46, 2083-2097.
Brearley, A. J. & Jones, R. H. (1998): Chondritic Meteorites. In: Planetary Materials (Papike, J. J., Editor): Chapter 3, 398 pages. Mineralogical Society of America: Washington, DC, USA.
Grady, M. M. (2000). Catalogue of Meteorites (5/e). Cambridge University Press: Cambridge, New York, Oakleigh, Madrid, Cape Town. 690 pages.
Shimizu, M., Yoshida, H., Mandarino, J. A. (2002) The new mineral species keilite, (Fe,Mg)S, the iron-dominant analogue of niningerite. The Canadian Mineralogist, 40 (6) 1687-1692 doi:10.2113/gscanmin.40.6.1687
Busemann, H., Baur, H., Weiler, R. (2002) On Line Etching of Bulk EH5 St. Mark’S - Radiogenic and Subsolar Noble Gases. 65th Annual Meteoritical Society Meeting.
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