Petrograph Bitumen Photographic Process. Which bitumen ?

[Mustafa Umut Sarac]

I have just decided to work with bitumen , widely available and result is my taste. One canadian researcher did petrograph photographic process with bitumen found between rocks in Athabasca area.

I memorised the process and I want to buy bitumen but I dont know which. There is 60/70 and 80/100 grades. And I learned there is sulfure processed and other processed ones.

Which bitumen should I buy ?

Thanks,

Mustafa Umut Sarac
Istanbul

 

[Mustafa Umut Sarac]

http://www.warrencariou.com/making-a-petrograph/

 

[NedL]

VERY interesting website thank you very much for pointing it out!

 

[awty]

Fantastic!
Please keep posting on what you find out about the process. I'm very interested to.

 

[RauschenOderKorn]

It would be nice to learn more about this process with you.
The very basics are there in the web, but the details would be really interesting to know.

 

[removed account4]

niepce used bitumen of judea, to make his physatotypes


here's some additional information if you haven't found it
http://www.photo-museum.org/niepce-invention-photography/
and
https://www.google.com/search?sourc....0j3......0....1j2..gws-wiz.....0.AKcvkUp4q-Y

ALSO
there is a way to do something similar using rosin dissolved in lavender oil, instead of asphalt ..
http://www.alternativephotography.com/physautotype-process/

 

[resummerfield]

I'm very interested in this... please keep posting!

 

[Andrew O'Neill]

I wonder if there is any bitumen on the banks of the Pitt River, just down the road from me...