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Swiss Journal of Geosciences

Table 3 t, b cell and Na/(Na + K) of muscovite, p of chlorite and K D of Tschermak substitution between muscovite and chlorite from core samples in HA and A-E

From: Diagenesis and very low grade metamorphism in a 7,012 m-deep well Hongcan 1, eastern Tibetan plateau

No.

Depth (m)

b cell (nm)

Na/(Na + K)

t

K D

p

HW-698

5847.5

0.9011

0.041

0.103

0.23

0.333

HW-699

6006

0.9005

0.087

0.128

0.281

0.343

HW-732

6073.2

0.9013

0.045

0.189

0.414

0.36

HW-733

6543.7

0.9013

0.036

0.145

0.345

0.33

HW-734

7011.2

0.8995

0.159

0.056

0.137

0.303

  1. t = Si − 3 (formula of muscovite is calculated based on 11 oxygen); p = (Si/2 − 2)/2 (formula of chlorite is calculated based on 28 oxygen); K D = [t/(1 − t)]/[p/(1 − p)]; see Miyashiro and Shido (1985)
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