Source: Only one place on the earth, and that
is nine miles north of Llano, Texas, in a road cut by Texas Highway
Chemical: Granite rock. Combination of pink feldspar
and blue quartz...a very rare occurrence of blue quartz.
Crystal System: Combination of several included in
Formation: This is a granite intrusion into
the surrounding limestone and is the only place on earth where
it is found.
Properties: This is a very, very hard granite rock.
Ask anyone who has visited the site and tried to hammer a piece
out of the rock. But it is well worth the effort because the rare
and unusual blue quartz crystals are quite large and easily visible.
And the the unique combination of pink feldspars and blue quartz
makes this a "must have" for mineral collectors.
feldspar and blue quartz crystals can easily been seen in llanite