| MetSoc Home Publications Contacts |
|
||
|
||
| Northwest Africa 15355 | |||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Basic information | Name: Northwest Africa 15355 This is an OFFICIAL meteorite name. Abbreviation: NWA 15355 Observed fall: No Year found: 2021 Country: (Northwest Africa) Mass:  890 g | ||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 624 approved meteorites (plus 1 unapproved name) classified as CV3. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites | ||||||||||||||||||||||||||||||
| Comments: | Approved 19 Mar 2023 | ||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 112:
Northwest Africa 15355 (NWA 15355) (Northwest Africa) Purchased: 2021 Classification: Carbonaceous chondrite (CV3) History: Purchased from Craig Zlimen in 2021 from an Algerian meteorite dealer. Physical characteristics: Single stone with dark brown fusion crust. Petrography: (D. Sheikh, Cascadia) Sample is composed of well-defined sub-millimeter to millimeter-sized chondrules (mostly porphyritic, Av. ~1.2 mm, up to 2.5 mm, ~67 vol. %) and refractory inclusions (~1 mm, up to 2.5 mm, ~3 vol. %) set within a fine-grained Fe-rich matrix (~30 vol. %) containing accessory magnetite and FeNi metal. Geochemistry: Olivine (Fa11.8±9.7, range Fa1.6-37.2, n=28), Low-Ca Pyroxene (Fs2.0±1.1Wo0.7±0.2, range Fs0.7-3.5Wo0.4-1.0, n=9). Classification: Carbonaceous Chondrite (CV3) Texture, chondrule size, CAI modal abundance, and mineral chemistry favor classification as CV3. It is interesting to note that a few spot analysis of the matrix yielded relatively low totals (~82.8 wt. % totals, ~32.9 wt. % FeO, n=4), indicating the presence of hydrous phases in these regions. Specimens: 25.9 g at Cascadia, main mass with Craig Zlimen. | ||||||||||||||||||||||||||||||
| Data from: MB112 Table 0 Line 0: |
|
||||||||||||||||||||||||||||||
| Institutions and collections |
Cascadia: Cascadia Meteorite Laboratory, Portland State University, Department of Geology, Room 17 Cramer Hall, 1721 SW Broadway, Portland, OR 97201, United States; Website (institutional address; updated 28 Oct 2011) |
||||||||||||||||||||||||||||||
| Catalogs: |
| ||||||||||||||||||||||||||||||
| References: | Published in Meteoritical Bulletin, no. 112, in preparation (2023)
| ||||||||||||||||||||||||||||||
| Geography: |
Statistics: This is 1 of 9429 approved meteorites from (Northwest Africa) (plus 1876 unapproved names) | ||||||||||||||||||||||||||||||