| 释义 |
lechatelierite Min.|ləʃəˈtɛlɪəraɪt, ləʃətɛˈlɪəraɪt|
Also † -iérite.
[a. F. lechateliérite (A. Lacroix 1915, in Bull. de la Soc. franç. de Min. XXXVIII. 185), f. Le Chatelier + -ite1.]
Naturally occurring vitreous silica, SiO2, formed when siliceous material is intensely heated (as by lightning).
1916Mineral. Mag. XVII. 353 Lechatelierite, naturally occurring fused (amorphous) silica. 1928Amer. Mineralogist XIII. 77 Lechateliérite is unique in that it is the only naturally occurring glass that is definite enough to be considered a mineral. 1931Jrnl. R. Soc. W. Austral. XVII. 146 Digging revealed a vertical core of lechatelierite in the soil. This core was hollow and very brittle, and extended downwards for about a metre. 1963W. A. Deer et al. Rock-Forming Min. IV. 180 Silica glass (vitreous silica; lechatelierite): can exist at room temperatures and up to 1000°C... It is an unstable glass at all temperatures below 1713°C. 1964New Scientist 16 Jan. 160/1 The invariable signs of flow and common presence of lechatelierite (pure silica glass) indicate that tektites were formed by rapid fusion at very high temperatures. |