Dear colleague!
 
I send you the results of my tentative phase analysis.

Database: 
PDF file up to set 47 and about 26000 phases calculated using 
data about crystal structure of intermetallic compounds (P.Villars, 
L.D.Calvert. Pearson's Handbook of Crystallographic Data for 
Intermetallic Phases. - American Society for Metals, v.1-3, 1985, 
3260 p) and selected phases from Inorganic Crystal Structure 
Database (Karlsruhe).

Program(s): package of DOS-programs developed by E.V.Shelekhov 
(Moscow Institute of Steel and Alloys, X-ray Department). 

Phases are selected by program PHAN (program of qualitative phase 
analysis) using next criteria:
 - nature of phase (Inorganic, organic, mineral, alloy);
 - chemical composition (if known);
 - P - intensity threshold for peaks to be taken into account;
 - tolerance window over d: delta(d)=c*d^n 
The main criterion is so called "overlapping" - scalar product 
of experimental and phase patterns (in functional analysis sense, 
i.e. integral over the diffraction vector of one pattern multiplied 
by another), normalized by lengthes of both patterns. In other words,
 it is cos(phi), where phi is the "angle" between two patterns. 
To accelerate calculations both pattern are represented as sets of
peaks with squared Cauchy profile (position, height, FWHM), basing 
on which the overlapping is produced analytically.

The overlapping is used while searching the main phases. Basing 
on main phases an iterative procedure can be applied to search 
additional phases, which uses the scalar products of patterns as 
well, and then, in turn, additional phases can be transferred 
into main ones and the procedure repeated.

SAMPLE 1.
phase composition:
 FeCO3
 Ca5 (P O4)3 F (or other compound like apatite)
 Si O2 (alpha-quarzt)
 and one (or more) unidentified phase 

All these phases were identified using following values of search parameters:
  Nature - Inorganic, exclude Organic phases and Replaced cards
  P=20%
  c=0.003, n=2
overlapping (normalization for the local one is done over the tolerance 
windows around sticks of phase stick-diagram):
  S(local)=0.4
  S(total)=0.2

Volume fractions of these phases are estimated using quantitative phase 
analysis program PHAN% (full profile refinement by simplified Rietveld 
method). Volume fractions of the phases are shown below: 

Phase	                     Vol.frac., %
Fe C O3        ( type G01 )	36
Ca5 (P O4)3 F (apatite)	        44
Si O2        ( type C8 )	20

Sample 2.
step 1 - check of single-phase state
  The pattern was indexed and proved to be the single-phase one with 
tetragonal crystal structure and lattice parameters 
        a=9.092 ang. and   c=13.47 ang.

step 2 - There is no similar phase in our database (up to 47-th set of PDF)

step 3 - interplanar spaces are multiplied by a various factor in the 
         range 0.9-1.1.
The satisfactory solution was found with the factor 1.05 for the pattern 
of the phase Zn [C(N H2)3]2 (S O4)2 calculated using ICSD.
The search parameters:
  P=95%
  c=0.002, n=2
  S(local)=0.5
  S(total)=0.5

Sample 3
The phase composition is admittedly:
 C13 H10 N2 O                          JCPDS 19-1946
 C7 H12 O4                             JCPDS 31-1670
 C H3 N5 *  H2 O                       JCPDS 23-1513
 C8 H7 N O                             JCPDS 32-1527

 and one (or more) unidentified phase....

The main phase was found with parameners:
  P=20%
  c=0.003, n=2
  S(local)=0.6
  S(total)=0.5

The rest phases were found in the mode of addiional phases search.

sample 4.
phase composition:
 Pb O
 Pb S O4 * 4Pb O
 (Pb O)3 Pb S O4 * H2 O

Phases  Pb O and Pb S O4 * 4Pb O were identified using following 
values of search parameters:
  Nature - Inorganic, exclude Organic phases and Replaced cards
  P=35%
  c=0.003, n=2
  S(local)=0.7
  S(total)=0.5

To identify the phase  (Pb O)3 Pb S O4 * H2 O the chemical composition 
is set as Pb in combination with arbitrary another elements.
Search parameters are:
  P=90%
  c=0.0035, n=2
  S(local)=0.5
  S(total)=0.3

Volume fractions of the phases are shown below:

    Phase	           Vol.fract., %
Pb O        ( type B10 )	42
Pb S O4 * 4 Pb O	        44
(Pb O)3 Pb S O4 * H2 O	        14

To improve the goodness of fitting the texture parameters are used 
for the phase Pb S O4 * 4 Pb O.