Amphoterite is an obsolete classification of chondritic meteorites that are now classified as LL (Low Iron and Low total metal content) types. Most of the iron in these types of meteorites is present as ironoxide in the minerals (e.g. olivine) rather than as free metal, as it is found in most other meteorites. Free metallic iron amounts to between 0.3% and 3.0% of the meteorite, and with a total iron content of 20% give or take a couple of percentage points.
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| - Amphoterite (en)
- 超低鐵球粒隕石 (zh)
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| - 超低鐵球粒隕石(Amphoterite)是已經廢棄不用的球粒隕石分類,現在的新分類為LL (低鐵和低總金屬含量) 的類型。 在這類型隕石中,多數的鐵都是以氧化鐵的形態存在於礦物中 (像是橄欖石) 不是自由的金屬,而不像許多其它的隕石。隕石內自由金屬鐵的含量只有0.3%至3.0%,但鐵的總含量可以達到20%或者更高一倍。 在隕石類型的LL之後可以附加數字,像是LL3、LL5、LL6等等 (類型範圍層3到7)。這個數值指示隕石中的隕石球粒所遭受的改變量。 隕石球粒是微小的礦物球,直徑通常在0.1-4毫米(0.0039-0.1575英寸)。一顆LL3類型是未受腐蝕,可以看出隕石球粒是完整的,LL7的類型則已被熔融,或是受到壓力或其它的力而改變,隕石球粒的圓形幾乎已經完全被抹煞。 (zh)
- Amphoterite is an obsolete classification of chondritic meteorites that are now classified as LL (Low Iron and Low total metal content) types. Most of the iron in these types of meteorites is present as ironoxide in the minerals (e.g. olivine) rather than as free metal, as it is found in most other meteorites. Free metallic iron amounts to between 0.3% and 3.0% of the meteorite, and with a total iron content of 20% give or take a couple of percentage points. (en)
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| - Amphoterite is an obsolete classification of chondritic meteorites that are now classified as LL (Low Iron and Low total metal content) types. Most of the iron in these types of meteorites is present as ironoxide in the minerals (e.g. olivine) rather than as free metal, as it is found in most other meteorites. Free metallic iron amounts to between 0.3% and 3.0% of the meteorite, and with a total iron content of 20% give or take a couple of percentage points. There will be a number after the LL in a meteorites classification type, e.g. LL3, LL5, LL6. (Types range from 3 to 7) The number indicates the amount of alteration suffered by the chondrules in the meteorite. A chondrule is a small mineral ball generally 0.1–4 millimetres (0.0039–0.1575 in) in diameter. An LL3 type is pristine with perfectly discernible chondrules, an LL7 type has been melted or altered by pressure or other force to almost completely obliterate the round chondrules. (en)
- 超低鐵球粒隕石(Amphoterite)是已經廢棄不用的球粒隕石分類,現在的新分類為LL (低鐵和低總金屬含量) 的類型。 在這類型隕石中,多數的鐵都是以氧化鐵的形態存在於礦物中 (像是橄欖石) 不是自由的金屬,而不像許多其它的隕石。隕石內自由金屬鐵的含量只有0.3%至3.0%,但鐵的總含量可以達到20%或者更高一倍。 在隕石類型的LL之後可以附加數字,像是LL3、LL5、LL6等等 (類型範圍層3到7)。這個數值指示隕石中的隕石球粒所遭受的改變量。 隕石球粒是微小的礦物球,直徑通常在0.1-4毫米(0.0039-0.1575英寸)。一顆LL3類型是未受腐蝕,可以看出隕石球粒是完整的,LL7的類型則已被熔融,或是受到壓力或其它的力而改變,隕石球粒的圓形幾乎已經完全被抹煞。 (zh)
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