Table 1. Positions of diagnostic peaks used for the identification of minerals and estimates of their abundances in X-ray diffractograms.

Mineral	Peak 	Peak	hkl
	(2 theta)	(angstrom)	

Quartz	20.85, 26.65	4.26, 3.34	100, 101
K-feldspars	26.91-27.50	3.31-3.24	220, 202, 002
Plagioclases	27.77, 28.13	3.21, 3.17	202, 002
Aragonite	26.22, 33.15, 45.86	3.40, 2.70, 1.98	111, 012, 221
Calcite	29.45	3.03	104
Dolomite	30.96	2.89	104
Siderite	32	2.79	104
Ankerite	30.79	2.9	104
Rhodochrosite	31.47	2.84	104
Pyrite	33.04, 56.29	2.70, 1.63	200, 311
Halite	31.69	2.82	200
Barite	25.84, 28.75	3.45, 3.10	021, 121
Gypsum	11.59, 20.73	7.63, 4.28	020, 021
Anhydrite	25.44	3.5	002, 020
Clay minerals	19.3-20.2	4.6-4.4	hkl
Clinoptilolite-heulandite	9.80-9.56	8.90-9.25	020