| 释义 |
koenenite Min.|kɜː-, ˈkøːnənaɪt|
[ad. G. koenenit (F. Rinne 1902, in Centralblatt f. Mineral. 493), f. the name of Adolph von Koenen (1837–1915), German geologist who first found it: see -ite1.]
A hydroxide and chloride of magnesium, aluminium, and sodium (formerly thought to be an impurity), which forms pale yellow scales when pure, but is normally red owing to enclosed hæmatite.
1902Jrnl. Chem. Soc. LXXXII. ii. 611 Koenenite. This new mineral was found..in crevices in the clay of the salt deposits at Volpriehausen, in the Sollinger Wald, Hanover. It is red in colour. 1952Mineral. Abstr. XI. 459 Koenenite is widely distributed in the German salt deposits, occurring in salt-clay with blue halite, in anhydrite ‘Hartsalz’, and carnallite. 1968Zeitschr. für Kristallogr. CXXVI. 7 Koenenite, 4NaCl.4(Mg,Ca)Cl2.5Mg(OH)2.4Al(OH)3, is built up of two trigonal substructures: [Na4(Ca,Mg)2Cl12]4- and [Mg7Al4(OH)22]4+. 1968I. Kostov Mineral. ii. iii. 195 Koenenite is trigonal with perfect {ob}0001{cb} cleavage. |