Brauns, R. (Reinhard), 1861-1937, Spencer, Leonard James, 1870- · Esslingen a. N. : J. F. Schreiber · leaf 63
ite. (After Tscliermak). may be distributed through the crystal without any regularity, or they may be arranged in bands or zones; or again, there may be a definite crystallo- graphic orientation between the enclosing and enclosed minerals. Enclosures of green actinolite in clear rock-crystal are… … Fig. 96. Fig. 97. Glassy enclosures in leucite. Lava from Vesuvius. Dark mineral enclosures in (pale) hyperst.hene. Magnification 45. Magnification 45. slag in a felspar crystal are shown in fig. 5, plate 59, and in leucite in fig. 4, plate 6'la. Enclosures of liquid in a crystal may usually be…
Mineralogy
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