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2,237 questions

3,912 answers


128,184 users

help to name a rock.

0 votes

alt texthard,toughneed to know what type of rock.

asked Aug 18, 2014 by ahmad (1,260 points)

4 Answers

0 votes

Hard to tell from the picture, but looks like it may be tufa. Does it bubble up with small bubbles if you place acid on it?

answered Aug 21, 2014 by hershel (52,800 points)
0 votes

Yes,sir  it bubble up on acid.

answered Aug 23, 2014 by ahmad (1,260 points)
0 votes

Ok so then it is indeed tufa. Tufa is a form of calcium carbonate (i.e. calcite or aragonite) that forms from water precipitation such as hot springs that forms under conditions that cause it to bubble with air pockets. It can be used as an ornamental stone when in layers.

answered Aug 26, 2014 by hershel (52,800 points)
0 votes

Thank you.

answered Sep 6, 2014 by ahmad (1,260 points)