St. Mark's meteorite, Intsika Yethu Local Municipality, Chris Hani District Municipality, Eastern Cape, South Africai
| Regional Level Types | |
|---|---|
| St. Mark's meteorite | Meteorite Fall Location |
| Intsika Yethu Local Municipality | Municipality |
| Chris Hani District Municipality | Municipality |
| Eastern Cape | Province |
| South Africa | Country |
This page is currently not sponsored. Click here to sponsor this page.
Latitude & Longitude (WGS84):
32° 1' South , 27° 25' East
Latitude & Longitude (decimal):
Meteorite Class:
Meteoritical Society Class:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Ilinge | 10,899 (2018) | 35.5km |
| Lady Frere | 25,041 (2012) | 38.9km |
| Queensdale | 20,009 (2018) | 44.4km |
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 ElementsMineral 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 DiagramDetailed Mineral List:
| ⓘ Alabandite Formula: MnS |
| ⓘ Cohenite Formula: Fe3C |
| ⓘ Cubanite Formula: CuFe2S3 |
| ⓘ Daubréelite Formula: Fe2+Cr3+2S4 |
| ⓘ Djerfisherite (TL) Formula: K6(Fe,Cu,Ni)25S26Cl Type Locality: |
| ⓘ Enstatite Formula: Mg2Si2O6 |
| ⓘ Graphite Formula: C |
| ⓘ Native Iron Formula: Fe |
| ⓘ Native Iron var. Kamacite Formula: (Fe,Ni) |
| ⓘ Niningerite Formula: MgS |
| ⓘ Oldhamite Formula: CaS |
| ⓘ Perryite Formula: (Ni,Fe)5(Si,P)2 |
| ⓘ 'Plagioclase' Formula: (Na,Ca)[(Si,Al)AlSi2]O8 Description: Albitic [An 14] |
| ⓘ Quartz Formula: SiO2 |
| ⓘ Schreibersite Formula: (Fe,Ni)3P |
| ⓘ Sphalerite Formula: ZnS |
| ⓘ Troilite Formula: FeS |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Iron | 1.AE.05 | Fe |
| ⓘ | var. Kamacite | 1.AE.05 | (Fe,Ni) |
| ⓘ | Cohenite | 1.BA.05 | Fe3C |
| ⓘ | Perryite | 1.BB.10 | (Ni,Fe)5(Si,P)2 |
| ⓘ | Schreibersite | 1.BD.05 | (Fe,Ni)3P |
| ⓘ | Graphite | 1.CB.05a | C |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Sphalerite | 2.CB.05a | ZnS |
| ⓘ | Cubanite | 2.CB.55a | CuFe2S3 |
| ⓘ | Troilite | 2.CC.10 | FeS |
| ⓘ | Alabandite | 2.CD.10 | MnS |
| ⓘ | Niningerite | 2.CD.10 | MgS |
| ⓘ | Oldhamite | 2.CD.10 | CaS |
| ⓘ | Daubréelite | 2.DA.05 | Fe2+Cr3+2S4 |
| ⓘ | Djerfisherite (TL) | 2.FC.05 | K6(Fe,Cu,Ni)25S26Cl |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 9 - Silicates | |||
| ⓘ | Enstatite | 9.DA.05 | Mg2Si2O6 |
| Unclassified | |||
| ⓘ | 'Plagioclase' | - | (Na,Ca)[(Si,Al)AlSi2]O8 |
List of minerals for each chemical element
Other Regions, Features and Areas containing this locality
AfricaContinent
African PlateTectonic Plate
- Karoo basinBasin
- Namaqua-Natal BeltOrogenic Belt
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, Brian (1966) The enstatite chondrites. Geochimica et Cosmochimica Acta, 30 (1) 23-39 doi:10.1016/0016-7037(66)90089-5
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. (1967) Niningerite: A New Meteoritic Sulfide. Science, 155 (3761). 451-453 doi:10.1126/science.155.3761.451
Leitch, C.A., Smith, J.V. (1982) Petrography, mineral chemistry and origin of Type I enstatite chondrites. Geochimica et Cosmochimica Acta, 46 (11) 2083-2097 doi:10.1016/0016-7037(82)90187-9
