File:Bulletin de l'Acadmie impriale des sciences de St.-Ptersbourg (20244266519).jpg

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Title: Über das Krystallsystem und die Winkel des Sylvanits, fig. 1 and 1 bis (up and down left), and 2 and 2 bis (up and down right), p. 192-202
Author: Nikolay v. Kokscharow
Year: 1866 ("lu le 17 août 1865")
Journal title: Bulletin de l'Académie impériale des sciences de Saint-Petersbourg, tome 9
Publisher: Académie impériale des sciences de Saint-Pétersbourg
View Book Page: Book Viewer on archive.org (p. 193)

Subjects: Science; Science -- Soviet Union
Contributing Library: New York Botanical Garden, LuEsther T. Mertz Library
Digitizing Sponsor: The LuEsther T Mertz Library, the New York Botanical Garden

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193 des Sclences de Saint-Pétersbourg.
aus dem fast aile neueren Mineralogen, als Haidinger, Nauniaini, Dana, Quienstedt u. m. a., ihm nicht gefolgt sind, sondern sich auf Miller’s Messungen stützen und den Sylvanit wieder als ein rhombisches Mineral betrachten.
Vor kurzem erhielt ich, durch die Güte des Hrn. General-Majors Hofmann, drei kleine Krystalle (N° 1, N° 2 u. N° 3), vermittelst welcher ich im Stande war mich zu überzeugen, dass das Krystallsystem des Sylvanits nicht rhombisch, sondern, wie Gustav Rose geäussert hat, monoklinoëdrisch ist. Zwei der erwähnten Krystalle (Fig. 2 u. 2 bis, Fig. 3 u. 3 bis) sind einfache Krystalle mit dem wesentlichsten Charakter der monoklinoëdrischen Combinationen. Der dritte Krystall (Fig. 1 u. 1 bis) ist ein Zwilling, und daher hat er, beim ersten Blick, eine gewisse Ähnlichkeit mit den rhombischen Krystallen. Übrigens ist in diesem letzten Krystalle die Zusammensetzungs-ebene beider Individuen (Zwillingsfläche) leicht zu er-kennen nach der Nath, welche auf den Flächen b == (~P~) deutlich sichtbar ist.
Fig. 1 und 1 bis. Fig 2. und 2 bis.

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  • bookid:bulletindelacadm09impe
  • bookyear:
  • bookdecade:
  • bookcentury:
  • bookauthor:Imperatorskaia_Akademiia_nauk_Russia_
  • booksubject:Science
  • booksubject:Science_Soviet_Union
  • bookpublisher:_St_Ptersbourg_Acadmie_impriale_des_sciences
  • bookcontributor:New_York_Botanical_Garden_LuEsther_T_Mertz_Library
  • booksponsor:The_LuEsther_T_Mertz_Library_the_New_York_Botanical_Garden
  • bookleafnumber:111
  • bookcollection:biodiversity
  • bookcollection:NY_Botanical_Garden
  • bookcollection:americana
  • BHL Collection
  • BHL Consortium
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9 August 2015

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