Archive - Dan Evanich's Substack

The Relevance of the Preservation of Provenance in a well curated Mineral Collection

Or, another way of recognizing those who had the vision to do so in the past.....

May 17 • Dan Evanich

April 2026

Restoration Time Completed!

Bringing Butte minerals back to their original glory one at a time.

Apr 9 • Dan Evanich

A New Polymorph Mineral from Mammoth-St. Anthony Mine, Tiger, Pinal County, Arizona

With a little background on why this historic locality is so important to mineral collectors.

Apr 5

March 2026

The Importance of Manganese in the Mining History of Butte, Montana

…..and a description of the mineral species found in the manganese ores of Butte that were mined during the historic mid-20th century era (1915-1983).

Mar 20 • Dan Evanich

Restoration Time

Old 19th Century Butte specimen

Mar 18 • Dan Evanich

Beyond Covellite.....

All things related to Butte Montana mineralogy and mining history.

Mar 16 • Dan Evanich