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Diogenites

Bilanga

Name

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Structure Class

HED achondrites

Chemical Class

Diogenite

Country

Year found

1999

Mass

25 kg

[Museum Collection]

(1) 48g   (2) 41g

This is 1 of 514 approved meteorites classified as Diogenite. Search for specimens in the Smithsonian Institution collection (U.S.): Search for this meteorite in the Natural History Museum collection (U.K.): Published in Meteoritical Bulletin, no. 84, MAPS 35, A199-A225 (2000)

Dhofar 700

Name

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Structure Class

HED achondrites

Chemical Class

Diogenite

Country

Year found

2002

Mass

2.77 kg

[Museum Collection]

(1) 2.54g

This is 1 of 514 approved meteorites classified as Diogenite. Published in Meteoritical Bulletin, no. 87, MAPS 38, A189-A248 (2003)

Tatahouine

Name

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Structure Class

HED achondrites

Chemical Class

Diogenite

Country

Year found

1931

Mass

12 kg

[Museum Collection]

(1) 7.75g

This is 1 of 514 approved meteorites classified as Diogenite. Search for specimens in the Smithsonian Institution collection (U.S.): Search for this meteorite in the Natural History Museum collection (U.K.): Search for this meteorite in the Museo Nazionale dell'Antartide database (Siena, Italy): Never published in the Meteoritical Bulletin

NWA4965

Name

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Structure Class

HED achondrites

Chemical Class

Diogenite

Country

Year found

2007

Mass

1023 g

[Museum Collection]

(1) 10.66g

This is 1 of 514 approved meteorites classified as Diogenite. Published in Meteoritical Bulletin, no. 97, MAPS 45, 449-493 (2010)

NWA5480

Name

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Structure Class

HED achondrites

Chemical Class

Diogenite

Country

Year found

2008

Mass

4.91 kg

[Museum Collection]

(1) 51g

This is 1 of 514 approved meteorites classified as Diogenite. Published in Meteoritical Bulletin, no. 95, MAPS 44, 429-462 (2009)

NWA6232

Name

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Structure Class

HED achondrites

Chemical Class

Diogenite-olivine

Country

Year found

2010

Mass

800 g

[Museum Collection]

(1) 12.26g

This is 1 of 19 approved meteorites classified as Diogenite-olivine. Published in Meteoritical Bulletin, No. 99, April 2012, MAPS 47, E1-E52 (2012) [published online only]

NWA7183

Name

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Structure Class

HED achondrites

Chemical Class

Diogenite-pm

Country

Year found

2007

Mass

175 g

[Museum Collection]

(1) 18.7g   (2) 13.7g   (3) 11.3g   (4) 2.7g

(5) 2.62g

History: Purchased by Twelker in 2007 September from a Moroccan dealer at the Denver Mineral Show. Petrography: (A. Irving and S. Kuehner, UWS) Very fresh fragmental breccia consisting predominantly of angular diogenitic orthopyroxene grains (up to 2 mm across) plus

NWA11375

Name

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Structure Class

HED achondrites

Chemical Class

Diogenite-pm

Country

Year found

2017

Mass

784 g

[Museum Collection]

(1) 28.0g   (2) 4.5g   (3) 4.4g   (4) 3.9g

History: Purchased by Eric Twelker in May 2017 from a Moroccan dealer. Petrography: (A. Irving and S. Kuehner, UWS) Breccia composed of angular mineral grains and rare pyroxene-chromite symplectite clasts in a sparse matrix. The predominant mineral is low-Ca pyroxene (exhibiting undulose extinction) with subordinate olivine (of several different compositions), chromite, metal, fayalite, and minor (

NWA14874

Name

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Structure Class

HED achondrites

Chemical Class

Diogenite

Country

Year found

2022

Mass

670 g

[Museum Collection]

(1) 5.50g

History: The meteorite was purchased from a meteorite dealer in Morocco. Physical characteristics: Light grayish rock without fusion crust. Petrography: The meteorite displays an unbrecciated grayish interior and is predominantly composed of up to 5 mm sized interlocking orthopyroxene (56 vol%) and calcic plagioclase (42 vol%) grains with minor Ti-bearing chromite and troilite. Few orthopyroxenes contain blebby augite exsolutions. Geochemistry: low-Ca pyroxene: Fs30.8±0.2Wo3.4±0.4 (Fs30.4-31.2Wo2.6-3.9, FeO/MnO=24-26, n=12); Ca-pyroxene: Fs15.9±0.4Wo39.7±0.4 (Fs15.5-16.6Wo39.1-40.1, FeO/MnO=19-20, n=6); calcic plagioclase: An96.1±0.3 (An96.0-96.5, n=11) Classification: Diogenite (noritic). Anomalous high plagioclase abundance (42 vol%).

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