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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) 18.4g  (2)  9.3 g (3) 4.5g   (4) 4.4g   (5) 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 (

NWA12636

Name

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Structure Class

HED achondrites

Chemical Class

Diogenite

Country

Year found

2018

Mass

967 g

[Museum Collection]

(1) 13g   

History: One stone weighing 967 g was found in Morocco prior to 2018. Blaine Reed purchased the sample from a meteorite dealer while at the 2018 Tucson Gem and Mineral Show. Physical characteristics: The sample has a yellowish-brown exterior with a few small patches of black fusion crust. The sample has yellowish-orange interior that is brecciated and friable. The cut face shows angular-subrounded clasts up to 1.5cm in long dimension. Petrography: Description and classification (A. Love, App): Sample is a breccia composed of diogenitic lithic fragments and coarser grained cataclastic clasts mixed within a comminuted host of similar materials. Lithic clasts are composed of interlocking, orthopyroxenes which share 120º grain boundaries. Orthopyroxenes contain Cpx inclusions and exsolution lamellae (up to 0.5µm) within crystals. Additional minerals are silica polymorphs, hercynitic chromite, FeS, and rare Ni-free iron metal. Orthopyroxenes within some lithic clasts exhibit normal extinction and equilibrium textures. Geochemistry: (A. Love, App) low Ca pyroxene: Fs27.2±0.6Wo1.5±0.1, Fe/Mn=26.6±0.6, n=14; high Ca pyroxene Fs10.5±0.4Wo44.9±0.5, Fe/Mn=22.5±1.1,n=4. Classification: Monomict diogenite breccia. Fe/Mn compositions of pyroxenes indicate this sample is diogenite meteorite. Textures and Fs compositions of pyroxenes indicate this sample is a diogenite. Specimens: Blaine Reed holds the main mass. Two slices weighing 28.13 g and a polished mount are on deposit at App.

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

• 分類  :ダイオジェナイト • 発見隕石:2022年 • 落下国 :モロッコ • 発見総重量  :670 g • 同分類の隕石数:560 個 • Diogenite • Found 2022 • Morocco • Found 670 g • one of 560 meteorites in this classification

NWA16846

Name

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Structure Class

HED achondrites

Chemical Class

Diogenite-olivine

Country

Year found

2024

Mass

300 g

[Museum Collection]

(1) 10.00 g

History: The meteorite was purchased from a dealer in Algeria. Physical characteristics: Many dark brownish to organge fragments some with minor fusion crust. Petrography: Coarse-grained achondritic breccia predominantly composed of up to 1 cm sized blocky orthopyroxene and less abundant smaller olivine grains with minor fine-grained interstitial matrix of related material. Opaque phases include chromite and troilite. Neither plagioclase nor metallic iron detected. Geochemistry: low-Ca pyroxene: Fs22.2±0.2Wo1.8±0.1 (Fs22.0-22.5Wo1.8-1.9, FeO/MnO=22-25, n=7); olivine: Fa26.2±0.1 (Fs26.0-26.4, FeO/MnO=41±1, n=7)

Name

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Structure Class

HED achondrites

Chemical Class

Diogenite-an

Country

Year found

2024

Mass

2 kg

[Museum Collection]

(1) 29.666 g

History: The meteorite was purchased from a meteorite dealer in Libya. Physical characteristics: Light grayish to light greenish stone partly covered with patchy fusion crust. Petrography: Achondrite dominantly composed of a fine-grained lithology with interspersed coarse-grained enclaves. In the fine-grained part patchily zoned pyroxenes and calcic plagioclase are the most abundant mineral phases. Both are often lath-shaped and gradually coarsen radially towards the enclaves which are dominantly composed of blocky up to 4 mm sized low-Ca pyroxene crystals. Many of these large crystals show resorption textures with embayed outlines and are sometimes overgrown by more Ca-rich patchy pyroxene. Olivine is a minor constituent in the fine-grained regions but becomes more abundant and more ferroan towards the coarse-grained areas. In both lithologies olivine often contains trapped melt inclusions and myrmekitic intergrowths of low-Ca pyroxene and troilite. Vesicles are abundant in the fine-grained regions. Minor phases include silica, apatite, chromite, troilite, and FeNi metal. Geochemistry: fine-grained lithology: patchily zoned pyroxene: Fs35.0±14.0Wo10.2±7.9 (Fs20.1-66.0Wo1.0-25.0, FeO/MnO=24-36, n=20); olivine: Fa31.3±0.6 (Fa30.5-32.1, FeO/MnO=44±2, n=10); calcic plagioclase: An90.6±1.5Or0.5±0.2 (An87.3-91.7Or0.3-0.9, n=10); Cr# in chromite: 68.4±3.1, n=5; coarse-grained lithology: olivine: Fa45.1±6.9 (Fa33.9-53.1, FeO/MnO=43±3, n=10); large low Ca-pyroxenes: Fs25.6±0.9Wo2.4±0.5 (Fs24.2-27.1Wo1.4-3.3, FeO/MnO=24-29, n=12); exsolutions in large pyroxenes: Fs28.3±1.0Wo5.5±0.3 (Fs26.4-29.0Wo5.0-5.9, FeO/MnO=25-29, n=6) Classification: Diogenite (anomalous, olivine-bearing). Diogenite based on presence of large low-Ca pyroxene grains, FeO/MnO ratios of pyroxene and olivine, and An-content of plagioclase. Anomalous designation based on dominant fine-grained lithology with abundant patchily zoned pyroxenes.

NWA17016
NWA17693

Name

Structure Class

HED achondrites

Chemical Class

Diogenite

Country

Year found

2025

Mass

1265 g

[Museum Collection]

(1) 21.62 g

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