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AXE HEMITROPIE [1 record]
Record 1 - internal organization data 2005-04-12
Record 1, English
Record 1, Subject field(s)
- Mineralogy
Record 1, Main entry term, English
- hemitropic axis 1, record 1, English, hemitropic%20axis
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 OBS
Hemitropic: pertaining to a twinned structure in which, if one part were rotated 180 °, the two parts would be parallel. 2, record 1, English, - hemitropic%20axis
Record number: 1, Textual support number: 2 OBS
axis: a real or imaginary straight line on which an object rotates or is regarded as rotating (the axis of a planet). 3, record 1, English, - hemitropic%20axis
Record 1, French
Record 1, Domaine(s)
- Minéralogie
Record 1, Main entry term, French
- axe d'hémitropie
1, record 1, French, axe%20d%27h%C3%A9mitropie
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
L'axe autour duquel s'est effectuée la rotation [d'un de deux cristaux maclés par l'hémitropie] 2, record 1, French, - axe%20d%27h%C3%A9mitropie
Record number: 1, Textual support number: 1 CONT
Une macle est un cristal complexe, semblant formé de deux cristaux jumeaux ou de deux demi-cristaux juxtaposés suivant une loi définie et non d'une façon accidentelle. Le plus souvent, ces deux cristaux élémentaires sont accolés suivant une face plane (face d'association), ayant la même notation pour les deux individus maclés, et l'un deux se trouve placé par rapport à l'autre dans la situation qu'on obtiendrait en faisant tourner celui-ci d'un angle déterminé autour d'un axe, dit «axe d'hémitropie». 3, record 1, French, - axe%20d%27h%C3%A9mitropie
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Mineralogía
Record 1, Main entry term, Spanish
- eje de hemiedria
1, record 1, Spanish, eje%20de%20hemiedria
masculine noun
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
Record 1, Textual support, Spanish
Record number: 1, Textual support number: 1 CONT
El eje sobre el cual se efectúa el imaginario medio giro [180 °] se llama eje de hemiedria, y se dice de ambos cristales que están maclados por hemitropía. El yeso (punta de lanza) constituye un ejemplo característico de esa asociación de cristales, también común en el anfíbol, el aragonito, la pirita (cruz de hierro), etc. 1, record 1, Spanish, - eje%20de%20hemiedria
Record number: 1, Textual support number: 1 OBS
hemiedria: Propiedad de los cristales que sólo presentan la mitad de las caras que tiene la forma holoédrica correspondiente. 1, record 1, Spanish, - eje%20de%20hemiedria
Record number: 1, Textual support number: 2 OBS
hemitropía: Asociación de dos cristales cuyas caras y aristas están dispuestas como si uno de ellos, tras haber crecido en la prolongación del otro, hubiera girado en 180 °. 1, record 1, Spanish, - eje%20de%20hemiedria
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