0035-001X 0035-001X S0035-001X2019000400355 10.31349/revmexfis.65.355 Venezuela Venezuela 00 08 2019 00 08 2019 65 4 355 359

1 1988 25 2 1995 1 3 1998 152 45 4 2010 132 17384 5 2009 517 2455 6 2010 22 7 2010 22 1402 8 2010 82 045202 9 2003 28 706 10 2011 23 225401 11 2006 203 459 12 2014 7 190-208 13 1978 16 131-7 14 1969 25 1164-74 15 1969 1 1 16 1985 17 1970 93 14 18 1967 1 52 19 1974 9 645 20 International Centre for Diffraction Data (ICDD) 2013 21 2003 199 373 22 2004 39 807 23 2006 203 3627 24 2007 204 547 25 2008 454 306 26 2008 43 783 27 2008 403 3228 28 2009 44 203 29 2009 44 548 30 2010 33 637-40 31 2014 613 143 32 2015 38 1061 33 2004 37 724 34 1969 2 65 35 1981 36 1968 1 108 37 1979 12 60 38 1993 192 55 39 1958 3 223 40 1987 20 79 41 1982 70 519 42 1976 32 751 43 44 1991 47 987 45 1985 41 244