陨石 深成安格赖特,Rafsa 007。 极为罕见,无保留价。 - 1.06 g





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賣家描述
Rafsa 007 28.642936°N, 8.199231°W
Tindouf, Algeria
Purchased: 2023
Classification: Angrite
History: 据报道,沙哈拉维(Sahrawi) meteorite hunters 的若干群体在 2023 年夏末于蒂侬杜夫(Tindouf)北部约 100 公里处的地区发现了该陨石的若干碎片。
Petrography: (K. Metzler, IfP) 以粒状纹理为主的极超苦性岩,主要由富Ca橄榄石(可达数毫米)组成,包裹着含铝-钛的辉石(diopside,约 1 毫米)以及少量Cr 含量的 pleonast 自旋铁矿和辉绿岩。后者经常在自旋铁矿颗粒周围形成薄(μm 级)的晶纹。辅助相有铁镍金属、钻矿铁(troilite)和 merrillite。大量金属已发生地球化改性并形成穿过整块岩石的细脉。
Geochemistry: Mineral compositions and geochemistry: Olivine composition: Fa39.0±0.4 (Fa38.4-39.5); Fe/Mn (at.): 87.4; CaO = 1.0-1.3 wt%; n=13. Pyroxene composition: Fs10.7±0.6 Wo52.9±0.6 (Fs9.7-11.6 Wo51.8-54.0); Fe/Mn (at.): 52.9; Al2O3 (wt%) = 6.9-9.5; TiO2 (wt%) = 1.6-2.4; n =11. Feldspar composition: An99.4±0.5 Or0.0±0.0 (An98.5-100.0 Or0.00); n=12. Pleonast spinel: Mg/(Mg+Fe (at.) = 0.47-0.50; Cr2O3 (wt%) = 4.5-5.5; Al2O3 (wt%) = 56.9-58.6; n=14.
Classification: Based on mineral chemistry and texture, categorized as Plutonic angrite.
Shock stage: U-S1
Weathering grade: Moderate
Classifier: K. Metzler, IfP
This lot comes with certificate of authenticity.
Thanks for your interest.
Rafsa 007 28.642936°N, 8.199231°W
Tindouf, Algeria
Purchased: 2023
Classification: Angrite
History: 据报道,沙哈拉维(Sahrawi) meteorite hunters 的若干群体在 2023 年夏末于蒂侬杜夫(Tindouf)北部约 100 公里处的地区发现了该陨石的若干碎片。
Petrography: (K. Metzler, IfP) 以粒状纹理为主的极超苦性岩,主要由富Ca橄榄石(可达数毫米)组成,包裹着含铝-钛的辉石(diopside,约 1 毫米)以及少量Cr 含量的 pleonast 自旋铁矿和辉绿岩。后者经常在自旋铁矿颗粒周围形成薄(μm 级)的晶纹。辅助相有铁镍金属、钻矿铁(troilite)和 merrillite。大量金属已发生地球化改性并形成穿过整块岩石的细脉。
Geochemistry: Mineral compositions and geochemistry: Olivine composition: Fa39.0±0.4 (Fa38.4-39.5); Fe/Mn (at.): 87.4; CaO = 1.0-1.3 wt%; n=13. Pyroxene composition: Fs10.7±0.6 Wo52.9±0.6 (Fs9.7-11.6 Wo51.8-54.0); Fe/Mn (at.): 52.9; Al2O3 (wt%) = 6.9-9.5; TiO2 (wt%) = 1.6-2.4; n =11. Feldspar composition: An99.4±0.5 Or0.0±0.0 (An98.5-100.0 Or0.00); n=12. Pleonast spinel: Mg/(Mg+Fe (at.) = 0.47-0.50; Cr2O3 (wt%) = 4.5-5.5; Al2O3 (wt%) = 56.9-58.6; n=14.
Classification: Based on mineral chemistry and texture, categorized as Plutonic angrite.
Shock stage: U-S1
Weathering grade: Moderate
Classifier: K. Metzler, IfP
This lot comes with certificate of authenticity.
Thanks for your interest.

