Thomsonite with Polished Face in Basalt Matrix 20
$49.00
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 face Thomsonite (15.8 x 14.1mm) 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 2.7 x 2.6 x 1.5 inches (6.9 x 6.8 x 3.8 cm) and weighs 6.8 oz or 0.43 lb (195g)
