Tamdakht是“普通球粒H5”隕石。
基本介紹
- 中文名:Tamdakht
- 外文名:H5
- 分類為:“普通球粒H5”隕石
- 坐標:(31° 9' 48"N, 7° 0' 54"W).
簡介,內部物質,墜落位置,
簡介
Tamdakht(H5)
This is an OFFICIAL meteorite name.
This is 1 of 6580 approved meteorites (plus 10 unapproved names) classified as H5.
圖1為Tamdakht切片標本,可見明顯”球粒結構“,切面偏光可見明顯金屬閃光點。
內部物質
log χ = 5.3. 鎂鐵矽酸鹽礦物 Fa18± 0.5 Opx = En83 Fs16 Wo2 鈣輝石橄欖石。斜長石Ab83–86 An5–15 Or7–2. 。鈣磷酸鹽(merrillite和Cl -磷灰石)。鉻:鉻#(100× molar Cr/[Cr + Al])= 82。金屬:5%的鎳鐵紋石和36-47%的鎳 taenite。氧同位素(C. Suavet,J. Gattacecca CEREGE):δ 17 O = 3.26‰,δ O = 5.01‰,and ΔO = 0.65‰.
墜落位置
Tamdakht隕石墜落地區坐標:(31° 9' 48"N, 7° 0' 54"W).