 | 1885 - 594 páginas
...sericite is a compact mass of minute muscovite scales with usually a faint green colour, and bearing a strong resemblance to talc, from which, however, it can easily be distinguished by aid of the blowpipe. 7. METALLIFEROUS DEPOSITS OF THE a. Contemporaneous. Devonian. — (1.) The famous... | |
 | Royal Physical Society of Edinburgh - 1885 - 600 páginas
...sericite is a compact mass of minute muscovite scales with usually a faint green colour, and bearing a strong resemblance to talc, from which, however, it can easily be distinguished by aid of the blowpipe. 7. METALLIFEROUS DEPOSITS OF THE a. Contemporaneous. Devonian. — (1.) The famous... | |
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SE metamorphic zone. The sericite is a compact mass of minute muscovite scales with usually a faint green colour, and bearing a strong resemblance to talc, from which, however, it can easily be distinguished by aid of the blowpipe. 7. METALLIFEROUS DEPOSITS... 