Thomsonite with Polished Face in Basalt Matrix 21
$54.00
1 in stock
Description
Minnesota Thomsonite is a RARE zeolite mineral found only at the Lake Superior shoreline SW of Grand Marais. This specimen has a single large polished dome Thomsonite (16.6 x 15.8 x 11.9mm) in a rough Basalt Matrix. The matrix has lots of small Thomsonite nodules visible. Digging the Thomsonite out of the Basalt is quite a process. This is how all the individual Thomsonite specimens were found. They were then dug out of the matrix and polished.
This specimen measures 1.9 x 1.2 x 1.1 inches (4.9 x 3.2 x 2.9 cm) and weighs 1.42 oz (40g)
