Thomsonite “Baroque” from Triangle T Thomsonite 13
$42.00
1 in stock
Description
Minnesota Thomsonite is a RARE zeolite mineral found only at the Lake Superior shoreline SW of Grand Marais. This specimen is from Harlow Tyschen’s Triangle T Thomsonite Shop in 1968. He owned this locale from 1942 to 1974. This piece has not been available for over 57 years. It came from the John J Newton collection.
This wonderful specimen measures 15.7 x 11.9 x 9.3mm and weighs 2.5 grams and is a highly polished specimen
