NWA 17743 LL6 角砾岩，带有熔融外壳 球粒状陨石 - 41.6 g - (1)

Writeup from MB 114:
Northwest Africa 17743 (NWA 17743)

Niger

Purchased: 2019 Aug
购买时间：2019年8月

Classification: Ordinary chondrite (LL6)
分类：普通解理球粒陨石（LL6）

History: Found in Niger and purchased by Mbark Arjdal from the finder in August 2019.
历史：在尼日尔发现，由 Mbark Arjdal 于 2019 年 8 月从发现者处购买。

Petrography: (A. Irving, UWS, and P. Carpenter, WUSL) Breccia with minimal secondary Fe oxide staining composed of very closely-packed recrystallized clasts containing some relict chondrules. Accessory phases include sodic plagioclase, taenite, troilite, low-Ti chromite and chlorapatite.
岩石学：(A. Irving, UWS, 与 P. Carpenter, WUSL) 碎屑岩，几乎无二次铁氧化物着色，由极紧密排列的再结晶碎块组成，包含一些残存的球粒。微量相包括钠质斜长石、太尼铁、三硫化铁、低钛铬铁矿和氯磷灰石。

Geochemistry: Olivine (Fa30.4±0.5, range Fa30.2-30.8, N = 4), low-Ca pyroxene (Fs25.8±0.2Wo2.0±0.2, range Fs25.6-26.1Wo1.8-2.2, N = 4), augite (Fs10.5±0.6Wo43.8±0.9, range Fs9.9-11.2Wo44.6-42.5, N = 4), plagioclase (Ab86.1-86.3An10.3-9.9Or3.6, N = 3).
地球化学：橄榄石（Fa30.4±0.5，范围 Fa30.2–30.8，样品数 N=4）、低钙辉石（Fs25.8±0.2 Wo2.0±0.2，范围 Fs25.6–26.1 Wo1.8–2.2，N=4）、辉石簇（Augite）（Fs10.5±0.6 Wo43.8±0.9，范围 Fs9.9–11.2 Wo44.6–42.5，N=4）、斜长石（Ab86.1–86.3 An10.3–9.9 Or3.6，N=3）。

Classification: Ordinary chondrite (LL6 breccia).
分类：普通球粒陨石（LL6 碎岩）。

I am a member of the Meteoritical Society (#7743) and have been collecting meteorites for more than 15 years.