Log InRegister
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat Articles
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsThe ElementsUsersBooks & MagazinesMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Treysa meteorite, Schwalmstadt, Schwalm-Eder, Hesse, Germanyi
Regional Level Types
Treysa meteoriteMeteorite Fall Location
Hesse- not defined -

This page is currently not sponsored. Click here to sponsor this page.
Lock Map
Name(s) in local language(s):, Hessen, Deutschland
Latitude & Longitude (WGS84): 50° 55' 0'' North , 9° 10' 59'' East
Latitude & Longitude (decimal): 50.91667,9.18333
GeoHash:G#: u1n98vp55
Locality type:Meteorite Fall Location
Meteorite Class:Anomalous IIIAB iron meteorite
Meteoritical Society Class:Iron, IIIAB-an
Metbull:View entry in Meteoritical Bulletin Database
Köppen climate type:Cfb : Temperate oceanic climate
Nearest Settlements:
Schwalmstadt19,279 (2015)3.0km
Willingshausen5,385 (2011)7.5km
Neustadt (Hessen)9,115 (2015)8.8km
Gilserberg3,470 (2011)9.0km
Jesberg2,655 (2011)9.6km

Iron meteorite, octahedrite (IIIAB-an, Om)
Fall, 3 Apr 1916; 63 kg

A fireball was seen over a radius of 150 km while detonations were heard over a radius of ~50 km. A few months later, after collecting and analyzing the various reports, Alfred Wegener helped to organize a search complete with a reward. He had been further encouraged by the fact that the bolide had apparently not broken up as frequently happens. Eleven months after the fall, a partially filled hole (1 m wide; 25 cm deep) was found and an iron meteorite was then uncovered at a depth of 1.6 meters. Although rust stains had begun to cover the surface, the thin fusion crust had prevented the corrosive effects of rain and snow from penetrating into the interior. As an iron meteorite (~9 wt% Ni), Treysa is characterized by prominent kamacite, taenite, and plessite accompanied by accessory schreibersite and troilite. The kamacite exhibits straight kamacite lamellae in etched sections with taenite and plessite accounting for roughly 35 vol% of the meteorite. Schreibersite is common as monocrystalline, somewhat brecciated crystals. Magnetite and wüstite are found in the fusion crust.

Treysa has received some attention as its cosmic ray exposure age (several hundred million years) was one of the first indicators that iron meteorites (more precisely, their immediate pre-terrestrial precursors) are less effected by space erosion than stony meteorites [from micrometeorite bombardment, cosmic rays…]. Treysa is one of 11 witnessed IIIAB irons to be recovered. Its trace element inventory is a little odd (Ir, esp., is higher than expected) so its full classification is 'IIIAB-anomalous.'

Most of the mass is held in Marburg, Germany.

Regions containing this locality

Eurasian PlateTectonic Plate
Rhenish Massif, EuropeMassif

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List

6 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:

Formula: Fe
Iron var: Kamacite
Formula: (Fe,Ni)
Iron var: Martensite
Formula: Fe
Formula: Fe2+Fe3+2O4
Formula: (Fe,Ni)3P
Formula: (Fe,Ni)
Formula: FeS
Formula: FeO

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
var: Kamacite1.AE.05(Fe,Ni)
var: Martensite1.AE.05Fe
Group 2 - Sulphides and Sulfosalts
Group 4 - Oxides and Hydroxides
Unclassified Minerals, Rocks, etc.

List of minerals arranged by Dana 8th Edition classification

Metals, other than the Platinum Group
var: Kamacite,Ni)
Group 2 - SULFIDES
AmXp, with m:p = 1:1
Unclassified Minerals, Mixtures, etc.
var: Martensite-Fe

List of minerals for each chemical element

O MagnetiteFe2+Fe23+O4
O WüstiteFeO
P Schreibersite(Fe,Ni)3P
S TroiliteFeS
Fe Iron (var: Kamacite)(Fe,Ni)
Fe MagnetiteFe2+Fe23+O4
Fe Iron (var: Martensite)Fe
Fe Schreibersite(Fe,Ni)3P
Fe Taenite(Fe,Ni)
Fe TroiliteFeS
Fe WüstiteFeO
Fe IronFe
Ni Iron (var: Kamacite)(Fe,Ni)
Ni Schreibersite(Fe,Ni)3P
Ni Taenite(Fe,Ni)

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

0 - 0.0117 Ma

ID: 2601609

Age: Anthropocene (0 - 0.0117 Ma)

Description: fluvial

Comments: In part, under alluvial clay [in den Alps with Pleistocene terraces and talus]

Lithology: Sand, gravel, crushed stone

Reference: Toloczyki, M., P. Trurnit, A. Voges, H. Wittekindt, A. Zitzmann. Geological Map of Germany 1:M. Bundesanstalt für Geowissenschaften und Rohstoffe. [94]

145 - 201.3 Ma

ID: 3185222
Mesozoic sedimentary rocks

Age: Jurassic (145 - 201.3 Ma)

Lithology: Sedimentary rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Early Triassic
247.2 - 251.902 Ma

ID: 3134564
Early Triassic sandstone

Age: Early Triassic (247.2 - 251.902 Ma)

Lithology: Major:{sandstone}, Minor{siltstone,mudstone}

Reference: Asch, K. The 1:5M International Geological Map of Europe and Adjacent Areas: Development and Implementation of a GIS-enabled Concept. Geologisches Jahrbuch, SA 3. [147]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License


Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Wegener, A. (1918) Astronomische Nachrichten 207(4961): 185-190. (Sept 1918)
Prior, G. T. (1923) Catalogue of Meteorites: with special reference to those represented in the collection of the British Museum of Natural History. Richard Clay & Sons, Limited: Bungay, Suffolk.
Ramdohr, P. (1973). The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Buchwald, V. F. (1975) Handbook of Iron Meteorites. University of California Press. 1418 pages.
Grady, M. M. (2000) Catalogue of Meteorites (5/e). Cambridge University Press: Cambridge, New York, Oakleigh, Madrid, Cape Town. 690 pages.
Imamura, M., Shima, M. & Honda, M. (1980) Radial distribution of spallogenic K, Ca, Ti, V and MN isotopes in iron meteorites. Zeitschrift für Naturforschung, Teil a, vol. 35a :267-279. (March 1980)

External Links

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.
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Public Relations by Blytheweigh.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2019, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: May 19, 2019 12:12:11 Page generated: January 11, 2019 11:52:57
Go to top of page