rowlesmr
Hi all
I have a sample containing a fraction of calcite. My research tells me that calcite cleaves on {10-11}; I would assume that this is the direction that it is most likely to orient.
The peak list generated in Topas is an hkl list. How can I transform the 4 figure cleavage direction into a 3 figure direction to use for the March-Dollase PO correction?
By inspection, {104} is the direction that orients. Is that correct? How can I derive that?
I'd like a little more backup than "it just works".
Thanks
Matthew
.
The calcite str I'm using:
str
phase_name "Calcite"
LVol_FWHM_CS_G_L( 1, 95.06099593, 0.89, 117.3718391,@, 234.4297995_LIMIT_MIN_0.3,cs_calcite, 197.6962607 min =30;)
Preferred_Orientation(Ca_PO, 0.4873391149 max =1;,, 1 0 4)
MVW( 600.5212865, 367.565949, 2.192194546)
space_group 167
scale sc_calcite 4.938301834e-005
Trigonal(a_calcite 4.990989979 min =4.9500; max =5.0200;,c_calcite 17.03849552 min =16.9000; max =17.1000;)
site Ca num_posns 6 x =0; : 0 y =0; : 0 z =0; : 0 occ Ca+2 1 beq 0.95
site C num_posns 6 x =0; : 0 y =0; : 0 z =1/4; : 0.25 occ C 1 beq 0.9
site O num_posns 18 x !x3_calcite 0.257 y =0; : 0 z =1/4; : 0.25 occ O 1 beq 0.94