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单词 needle-tin
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needle-tin
needle-tin n. (also needle-tin ore) [after German Nadelzinnerz (1877 or earlier)] now historical a variety of cassiterite occurring as long prismatic crystals.
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needle1676
spiculum1746
spicula1747
needle-tin1882
1882 Mineral. Mag. 4 7 F. Becke regards Wood Tin as an extreme form of the well known acicular crystals sometimes spoken of as ‘Needle Tin’.
1944 C. Palache et al. Dana's Syst. Mineral. (ed. 7) I. 576 at Cassiterite The acute pyramidal and long prismatic habits have been called sparable tin..and needle-tin ore (Nadelzinnerz Germ.).
1993 A. M. Clark Hey's Mineral Index (ed. 3) 488/1 Needle tin ore, var. of cassiterite.
extracted from needlen.
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