Table 2. Mineral assemblages and calculated activities used in P-T calculations

Sample	Location	Distance	Assemblage	Activities
		km	+ qtz + H2O	
				
E127	Kala Patar	42	garnet	py 0.0022, gr 0.00014, alm 0.37, spss 0.00007
			cordierite	crd 0.41, fcrd 0.15, mncrd 0.00045
			sillimanite	sill 1.0
			plagioclase	an 0.58
			biotite	phl 0.0303, ann 0.088, east 0.036
E134	Kala Patar	42	garnet	py 0.0025, gr 0.000016, aim 0.36, spss 0.0012
			cordierite	crd 0.41, fcrd 0.15, mncrd 0.00042
			sillimanite	sill 1.0
			plagioclase	an 0.25
			biotite	phl 0.0258, ann 0.088, east 0.032
E137	Kala Patar	42	garnet	py 0.0024, gr 0.00004, alm 0.25
			sillimanite	sill 1.0
			plagioclase	an 0.34
			biotite	phl 0.032, ann 0.064, east 0.039
			K-feldspar	san 0.88
E187	Mingbo valley	27	garnet	py 0.0005, gr 0.000045, alm 0.18
			sillimanite	sill 1.0
			plagioclase	an 0.39, ab 0.72
			biotite	phl 0.0159, ann 0.089, east 0.023
			muscovite	mu 0.67, pa 0.23, cel 0.014
			K-feldspar	san 0.91
E196	Mong	25	garnet	py 0.0038, gr 0.000025, alm 0.27, spss 0.0029
			cordierite	crd 0.41, fcrd 0.14, mncrd 0.0009
			sillimanite	sill 1.0
			plagioclase	an 0.37
			biotite	phl 0.043, ann 0.051, east 0.047
E198	Sanasa	24	garnet	py 0.0056, gr 0.000026, alm 0.37
			sillimanite	sill 1.0
			plagioclase	an 0.32
			biotite	phl 0.029, ann 0.067, east 0.034
			K-feldspar	san 0.91
E204	Namche Bazar	21	garnet	py 0.006, gr 0.000028, alm 0.36
			sillimanite	sill 1.0
			plagioclase	an 0.37
			biotite	phl 0.033, ann 0.054, east 0.04
			K-feldspar	san 0.90
E210	Phakding	15	garnet	py 0.0136, gr 0.000052, alm 0.32
			sillimanite	sill 1.0
			plagioclase	an 0.36
			biotite	phl 0.042, ann 0.043, east 0.053
			K-feldspar	san 0.88
E212	Lukla	9	garnet	py 0.0082, gr 0.0002, alm 0.28 
			sillimanite	sill 1.0
			plagioclase	an 0.57
			biotite	phl 0.034, ann 0.064, east 0.038
			K-feldspar	san 0.91
E214	Surke	7	garnet	py 0.0083, gr 0.000133, alm 0.20
			sillimanite	sill 1.0
			plagioclase	an 0.41
			biotite	phl 0.053, ann 0.048, east 0.056
E213	Puiyan	4	garnet	py 0.0088, gr 0.000097, alm 0.30
			sillimanite	sill 1.0
			plagioclase	an 0.37
			biotite	phl 0.047, ann 0.042, east 0.052
			K-feldspar	san 0.91
				
85H21D		0.5	garnet	py 0.0059, alm 0.38, spss 0.0000052
			kyanite	ky 1.0
			biotite	phl 0.07, ann 0.033, east 0.057
			ilmenite	ilm 0.94, pnt 0.0093, geik 0.011
			rutile	ru 1.0
85H21E		1.24	garnet	py 0.0044, alm 0.35, spss 0.0000067
			kyanite	ky 1.0
			biotite	phl 0.053, ann 0.046, east 0.049
			ilmenite	ilm 0.93, pnt 0.0012, geik 0.0052
			rutile	ru 1.0
85H21G		1.6	garnet	py 0.0028, gr 0.000046, alm 0.52
			kyanite	ky 1.0
			plagioclase	an 0.16, ab 0.89
			biotite	phl 0.042, ann 0.054, east 0.04
			muscovite	mu 0.69, pa 0.86, cel 0.018
85H21J		2	garnet	py 0.0031, gr 0.000101, alm 0.50
			kyanite	ky 1.0
			plagioclase	an 0.30, ab 0.80
			biotite	phl 0.037, ann 0.053, east 0.039
			muscovite	mu 0.68, pa 0.663, cel 0.019
85H22D		3.26	garnet	py 0.00085, gr 0.00013, alm 0.58
			sillimanite	sill 1.0
			plagioclase	an 0.44, ab 0.71
			biotite	phl 0.0211, ann 0.067, east 0.024
			muscovite	mu 0.73, pa 0.537, cel 0.021
85H22E		3.3	garnet	py 0.0015, gr 0.000111, alm 0.51
			sillimanite	sill 1.0
			plagioclase	an 0.41
			biotite	phl 0.0183, ann 0.088, east 0.023
			muscovite	mu 0.76, pa 0.446, cel 0.011
86H15A		6.86	garnet	py 0.0036, gr 0.0043, alm 0.29
			plagioclase	an 0.68, ab 0.54
			biotite	phl 0.038, ann 0.063, east 0.031
			muscovite	mu 0.76, pa 0.503, cel 0.012
85H7B		8	garnet	py 0.0102, gr 0.000047, alm 0.37
			sillimanite	sill 1.0
			plagioclase	an 0.36
			biotite	phl 0.068, ann 0.026, east 0.063
85H23		8.5	garnet	py 0.0018, gr 0.039, alm 0.44
			sillimanite	sill 1.0
			plagioclase	an 0.38
			biotite	phl 0.045, ann 0.039, east 0.05
85H5A		11.5	garnet	py 0.0025, gr 0.000111, alm 0.42
			sillimanite	sill 1.0
			plagioclase	an 0.47
			biotite	phl 0.0276, ann 0.069, east 0.033
86H21G		32	garnet	py 0.003, gr 0.000037, alm 0.35
			sillimanite	sill 1.0
			plagioclase	an 0.36
			biotite	phl 0.032, ann 0.061, east 0.037
86H19E		45	garnet	py 0.0039, gr 0.000105, alm 0.37
			sillimanite	sill 1.0
			plagioclase	an 0.53
			biotite	phl 0.032, ann 0.063, east 0.036

Sample numbers prefixed E are from this study; those prefixed 85 and 86 are from Hubbard (1988)
Distances are measured horizontally from the mapped position of the kyanite isograd.
End member abbreviations are from Holland & Powell (1998). Activities of end members were calculated using the computer program AX, employing activity models described in Holland & Powell (1998).