Attached my search/match results after chemical info:

Software: Bruker Eva 6.0 with ICDD CD-ROM Release 2000.
Methods:
Sample1:         Background subtraction
                        Subfile: Mineral
                        Offset correction after identification of Quartz


                        then further identification
                      interpretation not changed!
Sample2:         Background subtraction
                        Subfile: Master, no further constraints
                        No single phase from the PDF2000 fits,
                       only SiO2 found, no match for organic molecule!
Sample3:        After provision of chemical formula, all the
constraints   were put into Pc-PDFwin and only
one match resulted, which does not fit the trace, so I'll leave the
interpretation as it was.


Sample 4:        Leave as is was before chem. data