Tremolite

Here's a singular gemmy tremolite prism showing very lustrous faces and gemmy green-blue colours. The top is not terminated but is a plane of cleavage. A nice specimen!

Tremolite from the area is often dubbed "actinolite". Tremolite and actinolite are two very similar minerals that form a series with each other and essentially share the same chemical formula. Tremolite has a greater content of magnesium over iron, whereas actinolite has a greater content of iron over magnesium. Since we're unsure of the chemical difference we will use tremolite to identify these crystals. Tremolite is not uncommon in this area, most often found in the form of dense inter-grown fibrous material, thus making these gemmy and highly lustrous crystals something special!