Table 5.

X-ray diffractogram of the scale powder.

Sample	dcalc(Å)	dobs(Å)	Mg calcite (h k i l)	Aragonite (h k l)
1	4.2117	4.2201		1 1 0
2	3.9877	3.9900		0 2 0
3	3.8154	3.8101	01 1̄ 2
4	3.7531	3.7530		1 0 1
5	3.3967	3.3950		1 1 1
6	3.2806	3.2719		0 2 1
7	2.9987	3.0060	1 0 1̄ 4
8	2.8002	2.8010	0 0 0 6
9	2.6964	2.7330		1 2 1
10	2.7009	2.7000		0 1 2
11	2.6585	2.6600		0 3 0
12	2.4798	2.4787		2 0 0
13	2.4725	2.4780	1 1 2̄ 0
14	2.4124	2.4121		0 3 1
15	2.3720	2.3711		1 1 2
16	2.3431	2.3434		1 3 0
17	2.3297	2.3300		0 2 2
18	2.2765	2.2760		2 0 1
19	2.2619	2.2600	1 1 2̄ 3
20	2.1891	2.1900		2 1 1
21	2.1084	2.1084		1 2 2
22	2.0749	2.0750	2 0 2̄ 2
23	1.9770	1.9770		2 2 1
24	1.9938	1.9930		0 4 0
25	1.9505	1.9500		0 3 2
26	1.9077	1.9080	0 2 2̄ 4
27	1.9137	1.9140		0 0 3
28	1.8835	1.8840	0 1 1̄ 8	0 4 1
29	1.8534	1.8540	1 1 1̄ 6
30	1.8608	1.8610		0 1 3
31	1.8765	1.8765		2 0 2
32	1.8499	1.8499		1 4 0
33	1.8266	1.8270		2 1 2
34	1.8151	1.8150		1 3 2
35	1.7422	1.7420		1 1 3
36	1.7253	1.7260		0 2 3
37	1.6112	1.6100	2 1 3̄ 1
38	1.4898	1.4900	1 1 2̄ 9
1	4.2117	4.2201		1 1 0
2	3.9877	3.9900		0 2 0
39	1.4000	1.4000	0 0 0 12