another weird brick?

[mojjax]

It says STAR-CRES SPRINGFIELD , MASS . I'm thinking there might be a 'T' missing from the end of CRES . I sliced a piece off the corner - thinking it might be soap , but the chunk just crumbled when I tried to wash my hands with it - no suds . The razor blade sliced through it easily . Maybe it's just another piece of petrified CHEESE !

mojjax

 

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[Charlie P. (NY)]

Good Grief Mojjax We just gotta love ya.......whatever you do DONT TASTE THIS ONE....

Yeah, eventually you might find a piece of bismuth from soldering or arsenic from case hardening and we'd miss these puzzlers.

 

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[Whereisit]

Here is a long shot...........could it be a brick of buffing compound (jeweler's rouge) that is used to polish metals. The end looks worn by something round, like a buffing wheel. Does it smell like a burnt crayon when it burns?