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SNOW-ON-ROOF TEXTURE [1 record]
Record 1 - internal organization data 2005-02-11
Record 1, English
Record 1, Subject field(s)
- Various Metal Ores
Record 1, Main entry term, English
- snow-on-roof texture
1, record 1, English, snow%2Don%2Droof%20texture
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 CONT
[Sphalerite] forms a "snow-on-roof" texture due to its precipitation from percolating solutions inside open cavities. 1, record 1, English, - snow%2Don%2Droof%20texture
Record number: 1, Textual support number: 1 OBS
First described by Oder and Hook (1950), "snow-on-roof" texture is, in the author's opinion, the most diagnostic texture of MVT [Mississippi Valley-type] deposits because it has not been reported in any other type of mineral deposit. Typically, sphalerite occurs as coarse crystals preferentially coating the tops of dolomite breccia fragments in ore-matrix breccias ... A variety of snow-on-roof texture is sphalerite lining the bottoms of cavities ... 1, record 1, English, - snow%2Don%2Droof%20texture
Record 1, French
Record 1, Domaine(s)
- Minerais divers (Mines métalliques)
Record 1, Main entry term, French
- texture de type neige sur toit
1, record 1, French, texture%20de%20type%20neige%20sur%20toit
correct, feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- texture de type neige sur le toit 1, record 1, French, texture%20de%20type%20neige%20sur%20le%20toit
correct, feminine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
La sphalérite montre une texture de type «neige sur toit» produite par sa précipitation à partir de solutions percolant dans des cavités ouvertes. 1, record 1, French, - texture%20de%20type%20neige%20sur%20toit
Record number: 1, Textual support number: 1 OBS
Initialement décrite par Oder et Hook (1950), la texture de type «neige sur toit» est, de l'avis de l'auteur, la texture la plus symptomatique des gîtes de type Mississippi-Valley parce qu'elle n'a été signalée dans aucun autre type de gîte minéral. Typiquement, la sphalérite se présente sous forme de cristaux grossiers qui ornent préférentiellement le sommet des fragments des brèches dolomitiques dans les brèches à matrice minéralisée [...] Une autre variété de la texture «neige sur toit» se manifeste par des cristaux de sphalérite tapissant le fond de cavités [...] 1, record 1, French, - texture%20de%20type%20neige%20sur%20toit
Record 1, Spanish
Record 1, Textual support, Spanish
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