Thomsonite with Polished Face in Basalt Matrix 23
$34.00
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 two polished face Thomsonites (14 x 10.7mm) and (8 x 7.2mm) in a rough Basalt Matrix. The matrix has 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 1.5 x 1.2 x 0.81 inches (3.8 x 3.1 x 2 cm) and weighs 1.1 oz (31g)
