 | | Book | | bounding surface between two media, of which the lower is optically denser than the when GH is a perpendicular...the tube at will. It is called the analyzer. The lower nicol, which is revolvable, is placed be- neath..."crossed." When a thin section is examined over the lower nicol or between two nicols without the convergent...to be done in parallel polarized light. When the lower nicol is used alone, its vibration plane must be...beneath the stage. This lens may be raised with the lower nicol until the surface of the lens is practically |  | | Journal (volume) | | irregular grains as befOl'e, but has worked into the labradorite, replacing its alternate lamell:;e. This has...(Mg) or hypersthene (Hy) and hetween thelli aud labradorite (E ). The outer portions of the lahradorite are...alteration to gamet of a more acidic mineral - the labradorite. Of tbe brown hornblende and biotite one can...the diallage-amphibolite from Schauenstein in Austria as secondal'Y. It is irregularly interspersed amongst...an olivine gabbro from the Forest Region of Lower Austria, which read as follows: 2 ~ Der interessanteste |  | | Book | | Enstatite-diorite, 1. Enstatite-augite-andesite, Cheviot District. Penmaenmawr. 2. XXXVII., XXXVIII., XXXIX...Beinn Nevis. 2. Enstatite-porphyrite, Cheviot District. 1 & 2. Perlitic felsite, XLIV., XLV., ... 1. Spherulitic 2. Augite-granite, Cheviot District. 1. Plagioclase-augite-magnetite rock, Kyle...and mineralogical changes in the rocks of the district, and to impress on the bedding, cleavage and foliation...latter, fluid-inclusions in the former rocks. district ' Fluid inclusions vary considerably in form |  | | Book (volume) | | ein Buch öffentlich zugänglich ist, kann von Land zu Land unterschiedlich sein. Öffentlich zugängliche...Buch noch dem Urheberrecht unterliegt, ist von Land zu Land verschieden. Wir können keine Beratung leisten...undeutlicher, fand ebenfalls BECKE im Olivingabbro von Langenlois im niederösterreichischen Waldviertel (TSCHERM...Krystallf. 1, Taf. 5 , unter Almandin Fig. 2). Krems (Křemže ) bei Budweis . In licht- bis dunkelgrünem...besonders deutlich die von Prabsch , nördlich von Krems , sind von einer bis 1 mm dicken, concentrisch faserigen |
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