As a clue, you should compare your pattern to the standard XRD patterns of zeolites. The enclosed files can be useful.

http://www.iza-structure.org/databases/books/Collection_4ed.pdf

Can you kindly tell the origin of the sample that will help to give you a quick identification. Another thing that your graph is having symbol... can you give pattern with line.. then i can help you in getting the identification of your compound,,,

Its a natural zeolite from Gujarat.

I am attaching the graph after modification as adviced by you.

thanks in advance 

Dear Kulasekaran..

Probably your zeolite is Stilbite... 

Can you kindly post the photo of original sample.... that is stone which you have crushed... Your XRD is having overlapping peaks hence bit difficult for matching....

Thank you Dr Bhange,

I don't have the photograph. Kindly guide me how to do the matching?

whereabouts in Gujarat?

the zeolite book (posted by Sepehr Sadighi )is useful, but recently I used

i use Match software to identify materials via XRD

http://www.crystalimpact.com/match/

you can use the free trial if you have the pattern in ASCII format

but if the material is not matched well you can model the crystallographic structure, I use Endeavour form

http://www.crystalimpact.com/endeavour/Default.htm 

Thank you Dr Rehab O. Abdel Rahman.