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[merged small][graphic][graphic][subsumed][ocr errors][subsumed][subsumed][subsumed][merged small][merged small][graphic][graphic][subsumed][subsumed]

G. S. I., Calcutta.

FIG. 4. SCHEELITE (DARK GREY) REPLACING

WOLFRAM (LIGHT GREY). (X 54).

1. Dunn, Photomicros.

FIG. 3. WOLFRAM (W) PARTLY ENCLOSING

A TOURMALINE CRYSTAL (T) IN

QUARTZ (Q). (x 54).

.

[merged small][graphic][graphic][subsumed][ocr errors][ocr errors][subsumed][subsumed][subsumed][ocr errors][subsumed][ocr errors][merged small][merged small][graphic][graphic][ocr errors][subsumed][subsumed][ocr errors]

G. S. I., Calcutta.

id. Dunn, Photomicros.

FIG. 3. PYRITE VEINLETS IN QUARTZ (Q)

AND WOLFRAM (W). (x 54).

FIG. 4. PYRITE (P) VEINING TOURMALINE (T) AND BOTH REPLACED AND VEINED BY

CHLORITE (C). (x 54).

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