Ordinary chondrite, brecciated (H4)
Fell, 20 May 1884; 19.86 kg

After a fireball and an explosion, two stones of unequal size (18.95 kg; .91 kg) fell and were recovered. Initially, the meteorite did not seem to be have been of unusual interest with olivine (Fa20), pyroxene, troilite, meteoritic iron, and some glass as is more or less expected in ordinary chondrites. However, the meteorite reveals a dark/light structure with darker regions of a somewhat disparate chemistry and increasing disequilibrium. Interest heightened considerably, however, as an unusual clast with immiscible melt and, then, other unusual inclusions were found. The inclusions appear related to carbonaceous chondrites, but may sample ancient populations otherwise poorly represented in our collections. Here and there exotic fragments of both high temperature processes and of much cooler aqueous alteration have been reported.

Tysnes Island is one of 51 meteorites classified precisely as an H4 ordinary chondrite (high bulk iron, moderately equilibrated silicates) [as of Dec. 2015]. However, while this description may hold for most of the meteorite there are clearly some components with unusually different histories which have joined this superficially 'ordinary' chondrite somewhere along the way.

Tysnes Island is one of 7 witnessed ordinary chondrite falls to have been recovered in Norway. The main mass has been kept at the Mineralogical-Geology Museum in Oslo where most Norwegian meteorites are housed.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

14 valid minerals.

Meteorite/Rock Types Recorded

Select Rock List Type

Alphabetical List Tree Diagram

ⓘ Chondrite meteorite

ⓘ H4 chondrite meteorite

Detailed Mineral List:

ⓘ Augite

Formula: (Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆

References:

Krot, Alexander N., Rubin, Alan E. (1994) Glass-rich chondrules in ordinary chondrites. Meteoritics, 29 (5) 697-707 doi:10.1111/j.1945-5100.1994.tb00787.x

ⓘ Augite var. Fassaite

Formula: (Ca,Na)(Mg,Fe²⁺,Al,Fe³⁺,Ti)[(Si,Al)₂O₆]

References:

Krot, Alexander N., Rubin, Alan E. (1994) Glass-rich chondrules in ordinary chondrites. Meteoritics, 29 (5) 697-707 doi:10.1111/j.1945-5100.1994.tb00787.x

ⓘ Chromite

Formula: Fe²⁺Cr³⁺₂O₄

References:

Wilkening, L. L. (1978) Tysnes Island - an unusual clast composed of solidified, immiscible, Fe-FeS and silicate melts: Meteoritics 13 (1):1-9. (Mar 1978).

Briani, G., Gounelle, M., Bourot-Denise, M. & Zolensky, M. E. (2012) Xenoliths and microxenoliths in H chondrites: Sampling the zodiacal cloud in the asteroid Main Belt. Meteoritics & Planetary Science 47 (5): 880-902. (2012). (May 2012).

ⓘ Dolomite

Formula: CaMg(CO₃)₂

References:

ⓘ Enstatite

Formula: Mg₂Si₂O₆

Description: Rare grain (En90Wo4).

References:

ⓘ 'Fayalite-Forsterite Series'

Description: Olivine Composition (Fa20) characteristic of H chondrites [But Fa 15.6 in dark fractions reported by McSween & Lipschutz (1980)].

References:

Mason, Brian (1963) Olivine composition in chondrites. Geochimica et Cosmochimica Acta, 27 (10) 1011-1023 doi:10.1016/0016-7037(63)90062-0

Wilkening, L. L. (1978) Tysnes Island - an unusual clast composed of solidified, immiscible, Fe-FeS and silicate melts: Meteoritics 13 (1):1-9. (Mar 1978).

McSween, H. Y., Jr. & Lipschutz, M. E. (1980) Origin of volatile-rich H chondrites with light/dark structures: Lunar and Planetary Science Conference XI, Proceedings. Vol. 2:853-864. New York, Pergamon Press, 1980.

Graham, A. L., Bevan, A. W. R., Hutchison, R. (1985) Catalogue of Meteorites - With Special Reference to those Represented in the Collection of the British Museum (Natural History) (4th ed.) British Museum (Natural History), London.

Krot, Alexander N., Rubin, Alan E. (1994) Glass-rich chondrules in ordinary chondrites. Meteoritics, 29 (5) 697-707 doi:10.1111/j.1945-5100.1994.tb00787.x

ⓘ 'Glass'

References:

Wilkening, L. L. (1978) Tysnes Island - an unusual clast composed of solidified, immiscible, Fe-FeS and silicate melts: Meteoritics 13 (1):1-9. (Mar 1978).

Krot, Alexander N., Rubin, Alan E. (1994) Glass-rich chondrules in ordinary chondrites. Meteoritics, 29 (5) 697-707 doi:10.1111/j.1945-5100.1994.tb00787.x

ⓘ Graphite

Formula: C

Description: Graphite-magnetite aggregates are found.

References:

Scott, E. R. D., Taylor, G. J., Rubin, A. E., Okada, A. & Keil, K. (1981) Graphite-magnetite aggregates in ordinary chondritic meteorites. Nature (291): 544-546. (June 1981).

ⓘ Isocubanite

Formula: CuFe₂S₃

References:

Ramdohr, Paul (1972) The Opaque Minerals in Stony Meteorites. De Gruyter. doi:10.1515/9783112651025

ⓘ Magnesite

Formula: MgCO₃

Description: Carbonates are indicative of preterrestrial hydrous activity.

References:

ⓘ Magnesite var. Breunnerite

Formula: (Mg,Fe)CO₃

Description: Carbonates are indicative of preterrestrial hydrous activity.

References:

ⓘ Magnetite

Formula: Fe²⁺Fe³⁺₂O₄

References:

Scott, E. R. D., Taylor, G. J., Rubin, A. E., Okada, A. & Keil, K. (1981) Graphite-magnetite aggregates in ordinary chondritic meteorites. Nature (291): 544-546. (June 1981).

ⓘ Native Copper

Formula: Cu

References:

Ramdohr, Paul (1972) The Opaque Minerals in Stony Meteorites. De Gruyter. doi:10.1515/9783112651025

ⓘ Native Iron

Formula: Fe

Description: Kamacite in dark fractions unequilibrated.

References:

Ramdohr, Paul (1972) The Opaque Minerals in Stony Meteorites. De Gruyter. doi:10.1515/9783112651025

ⓘ Native Iron var. Kamacite

Formula: (Fe,Ni)

Description: Kamacite in dark fractions unequilibrated.

References:

Ramdohr, Paul (1972) The Opaque Minerals in Stony Meteorites. De Gruyter. doi:10.1515/9783112651025

ⓘ 'Orthopyroxene Subgroup'

References:

Krot, Alexander N., Rubin, Alan E. (1994) Glass-rich chondrules in ordinary chondrites. Meteoritics, 29 (5) 697-707 doi:10.1111/j.1945-5100.1994.tb00787.x

ⓘ 'Pyroxene Group'

Formula: ADSi₂O₆

References:

ⓘ Pyrrhotite

Formula: Fe_1-xS

Description: In Carbonaceous clasts.

References:

ⓘ Schreibersite

Formula: (Fe,Ni)₃P

References:

Ramdohr, Paul (1972) The Opaque Minerals in Stony Meteorites. De Gruyter. doi:10.1515/9783112651025

ⓘ Taenite

Formula: (Ni,Fe)

Description: Taenite in light fractions is much more equilibrated than in dark fractions.

References:

ⓘ Troilite

Formula: FeS

References:

Ramdohr, Paul (1972) The Opaque Minerals in Stony Meteorites. De Gruyter. doi:10.1515/9783112651025

Wilkening, L. L. (1978) Tysnes Island - an unusual clast composed of solidified, immiscible, Fe-FeS and silicate melts: Meteoritics 13 (1):1-9. (Mar 1978).

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘ	Native Copper	1.AA.05	Cu
ⓘ	Native Iron	1.AE.05	Fe
ⓘ	var. Kamacite	1.AE.05	(Fe,Ni)
ⓘ	Taenite	1.AE.10	(Ni,Fe)
ⓘ	Schreibersite	1.BD.05	(Fe,Ni)₃P
ⓘ	Graphite	1.CB.05a	C
Group 2 - Sulphides and Sulfosalts
ⓘ	Isocubanite	2.CB.55b	CuFe₂S₃
ⓘ	Pyrrhotite	2.CC.10	Fe_1-xS
ⓘ	Troilite	2.CC.10	FeS
Group 4 - Oxides and Hydroxides
ⓘ	Chromite	4.BB.05	Fe²⁺Cr³⁺₂O₄
ⓘ	Magnetite	4.BB.05	Fe²⁺Fe³⁺₂O₄
Group 5 - Nitrates and Carbonates
ⓘ	Magnesite	5.AB.05	MgCO₃
ⓘ	var. Breunnerite	5.AB.05	(Mg,Fe)CO₃
ⓘ	Dolomite	5.AB.10	CaMg(CO₃)₂
Group 9 - Silicates
ⓘ	Enstatite	9.DA.05	Mg₂Si₂O₆
ⓘ	Augite	9.DA.15	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
ⓘ	var. Fassaite	9.DA.15	(Ca,Na)(Mg,Fe²⁺,Al,Fe³⁺,Ti)[(Si,Al)₂O₆]
Unclassified
ⓘ	'Fayalite-Forsterite Series'	-
ⓘ	'Pyroxene Group'	-	ADSi₂O₆
ⓘ	'Orthopyroxene Subgroup'	-
ⓘ	'Glass'	-

List of minerals for each chemical element

C	Carbon
C	ⓘ Dolomite	CaMg(CO₃)₂
C	ⓘ Graphite	C
C	ⓘ Magnesite	MgCO₃
C	ⓘ Magnesite var. Breunnerite	(Mg,Fe)CO₃
O	Oxygen
O	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
O	ⓘ Chromite	Fe²⁺Cr₂³⁺O₄
O	ⓘ Dolomite	CaMg(CO₃)₂
O	ⓘ Enstatite	Mg₂Si₂O₆
O	ⓘ Magnesite	MgCO₃
O	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
O	ⓘ Magnesite var. Breunnerite	(Mg,Fe)CO₃
O	ⓘ Fayalite-Forsterite Series
O	ⓘ Pyroxene Group	ADSi₂O₆
O	ⓘ Augite var. Fassaite	(Ca,Na)(Mg,Fe²⁺,Al,Fe³⁺,Ti)[(Si,Al)₂O₆]
Na	Sodium
Na	ⓘ Augite var. Fassaite	(Ca,Na)(Mg,Fe²⁺,Al,Fe³⁺,Ti)[(Si,Al)₂O₆]
Mg	Magnesium
Mg	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Mg	ⓘ Dolomite	CaMg(CO₃)₂
Mg	ⓘ Enstatite	Mg₂Si₂O₆
Mg	ⓘ Magnesite	MgCO₃
Mg	ⓘ Magnesite var. Breunnerite	(Mg,Fe)CO₃
Mg	ⓘ Fayalite-Forsterite Series
Mg	ⓘ Augite var. Fassaite	(Ca,Na)(Mg,Fe²⁺,Al,Fe³⁺,Ti)[(Si,Al)₂O₆]
Al	Aluminium
Al	ⓘ Augite var. Fassaite	(Ca,Na)(Mg,Fe²⁺,Al,Fe³⁺,Ti)[(Si,Al)₂O₆]
Si	Silicon
Si	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Si	ⓘ Enstatite	Mg₂Si₂O₆
Si	ⓘ Fayalite-Forsterite Series
Si	ⓘ Pyroxene Group	ADSi₂O₆
Si	ⓘ Augite var. Fassaite	(Ca,Na)(Mg,Fe²⁺,Al,Fe³⁺,Ti)[(Si,Al)₂O₆]
P	Phosphorus
P	ⓘ Schreibersite	(Fe,Ni)₃P
S	Sulfur
S	ⓘ Isocubanite	CuFe₂S₃
S	ⓘ Pyrrhotite	Fe_1-xS
S	ⓘ Troilite	FeS
Ca	Calcium
Ca	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Ca	ⓘ Dolomite	CaMg(CO₃)₂
Ca	ⓘ Augite var. Fassaite	(Ca,Na)(Mg,Fe²⁺,Al,Fe³⁺,Ti)[(Si,Al)₂O₆]
Ti	Titanium
Ti	ⓘ Augite var. Fassaite	(Ca,Na)(Mg,Fe²⁺,Al,Fe³⁺,Ti)[(Si,Al)₂O₆]
Cr	Chromium
Cr	ⓘ Chromite	Fe²⁺Cr₂³⁺O₄
Fe	Iron
Fe	ⓘ Augite	(Ca_xMg_yFe_z)(Mg_y1Fe_z1)Si₂O₆
Fe	ⓘ Chromite	Fe²⁺Cr₂³⁺O₄
Fe	ⓘ Native Iron	Fe
Fe	ⓘ Isocubanite	CuFe₂S₃
Fe	ⓘ Native Iron var. Kamacite	(Fe,Ni)
Fe	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
Fe	ⓘ Pyrrhotite	Fe_1-xS
Fe	ⓘ Schreibersite	(Fe,Ni)₃P
Fe	ⓘ Taenite	(Ni,Fe)
Fe	ⓘ Troilite	FeS
Fe	ⓘ Magnesite var. Breunnerite	(Mg,Fe)CO₃
Fe	ⓘ Fayalite-Forsterite Series
Fe	ⓘ Augite var. Fassaite	(Ca,Na)(Mg,Fe²⁺,Al,Fe³⁺,Ti)[(Si,Al)₂O₆]
Ni	Nickel
Ni	ⓘ Native Iron var. Kamacite	(Fe,Ni)
Ni	ⓘ Schreibersite	(Fe,Ni)₃P
Ni	ⓘ Taenite	(Ni,Fe)
Cu	Copper
Cu	ⓘ Native Copper	Cu
Cu	ⓘ Isocubanite	CuFe₂S₃

Other Regions, Features and Areas containing this locality

Eurasian PlateTectonic Plate

CaledonidesOrogenic Belt

EuropeContinent

Norway

⭔HordalandCounty

ScandinaviaRegion

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References

www.lpi.usra.edu (n.d.) http://www.lpi.usra.edu/meteor/metbull.php?code=24094

adsabs.harvard.edu (n.d.) http://adsabs.harvard.edu/full/1994Metic.29.697K

articles.adsabs.harvard.edu (n.d.) http://articles.adsabs.harvard.edu/full/1980LPSC..11.853M

Hiortdahl, Th. (1885) Analyse af Tysnæs-Meteoriten [Analysis of the Tysnæs Meteorite]. Nyt magazin for naturvidenskaberne [New magazine for the natural sciences], 30. 276-278

Mason, Brian (1963) Olivine composition in chondrites. Geochimica et Cosmochimica Acta, 27 (10) 1011-1023 doi:10.1016/0016-7037(63)90062-0

Ramdohr, Paul (1972) The Opaque Minerals in Stony Meteorites. De Gruyter. doi:10.1515/9783112651025

Wilkening, L. L. (1978) Tysnes Island - an unusual clast composed of solidified, immiscible, Fe-FeS and silicate melts: Meteoritics 13 (1):1-9. (Mar 1978).

Scott, E. R. D., Taylor, G. J., Rubin, A. E., Okada, A. & Keil, K. (1981) Graphite-magnetite aggregates in ordinary chondritic meteorites. Nature (291): 544-546. (June 1981).

Rubin, Alan E. (1990) Kamacite and olivine in ordinary chondrites: Intergroup and intragroup relationships. Geochimica et Cosmochimica Acta, 54 (5) 1217-1232 doi:10.1016/0016-7037(90)90148-e

Krot, Alexander N., Rubin, Alan E. (1994) Glass-rich chondrules in ordinary chondrites. Meteoritics, 29 (5) 697-707 doi:10.1111/j.1945-5100.1994.tb00787.x

Grady, Monica (2000) Catalogue of Meteorites (5th ed.). Cambridge University Press.

Bryhni, Inge (2002) Norske meteoritter [Norwegian meteorites]. STEIN. Nordisk magasin for populær geologi, 29 (4) 20-24

www.lpi.usra.edu (n.d.) http://www.lpi.usra.edu/meteor/metbull.php

Larsen, Jon, Bilet, Morten, Thoresen, Øivind, Selbekk, Rune S. (2014) Norske meteoritter - [Norwegian Meteorites]. Kunstbokforlaget Den gyldne Banan. p.1-128.pp.32-33

www.nags.net (2020) http://www.nags.net/Stein/2002/2002-4_Bryhni.pdf

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Tysnes Island meteorite, Tysnesøya, Tysnes, Vestland, NorwayiRegional Level TypesTysnes Island meteoriteMeteorite Fall Location TysnesøyaIsland TysnesMunicipality VestlandCounty NorwayCountry function showexplain() { $("#locexplain").toggle(); if (typeof movemap === "function") movemap(); }

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Detailed Mineral List:

Gallery:

List of minerals arranged by Strunz 10th Edition classification

List of minerals for each chemical element

Other Regions, Features and Areas containing this locality

References

Tysnes Island meteorite, Tysnesøya, Tysnes, Vestland, Norway i
Regional Level Types
Tysnes Island meteorite Meteorite Fall Location
Tysnesøya Island
Tysnes Municipality
Vestland County
Norway Country