- Tytuł:
- Orbicular granite near Jelenia Góra in southwestern Poland: the first outcrops?
- Autorzy:
-
Kennan, P.S.
Lorenc, M. W. - Powiązania:
- https://bibliotekanauki.pl/articles/2086526.pdf
- Data publikacji:
- 2008
- Wydawca:
- Polskie Towarzystwo Mineralogiczne
- Tematy:
-
orbicular granite
Leopold von Buch
Karkonosze granite
Lower Silesia
Napoleonite - Opis:
- In 1802, Leopold von Buch described some outcrops of orbicular granite in the Karkonosze granite, Lower Silesia, Poland. In that publication, Abraham Gottlieb Werner wrote a foreword dated 1800. The Silesian discovery predates that of the well-known orbicular diorite (Napoleonite) in outcrop on Corsica and, thus, may be the first ever record of this distinctive rock type in its geological context. The characterizing, closely-packed, simple orbs comprise K-feldspar cores surrounded by rims of radiating K-feldspar and quartz. Rapid growth from a hydrous, pegmatitic melt is indicated. The Karkonosze outcrop, in the timing of its discovery, is a unique part of the geological heritage.
- Źródło:
-
Mineralogia; 2008, 39, 3/4; 79--85
1899-8291
1899-8526 - Pojawia się w:
- Mineralogia
- Dostawca treści:
- Biblioteka Nauki
Artykuł