Scapolite var. Wernerite - Rose Road, Pitcairn, New York

Contributed by: Chris Clemens
Date: Apr 26th, 2026
Locality: Purple Diopside Mound (PDM), Rose Road, Pitcairn, St. Lawrence County, New York, USA (See on Mindat)
Size: 7 x 5.9 x 7.8 cm
Weight: 333 g

Description:
This multi-wave fluorescent specimen contains wernerite, diopside and minor calcite, collected from the Purple Diopside Mound (PDM), Rose Road, Pitcairn, St. Lawrence County, New York. Under shortwave UV the wernerite fluoresces a warm cream color and the diopside a pale blue. At its best under longwave UV, the wernerite shows a bright yellow response and the diopside glows a beautiful sky blue. The calcite is only dimly fluorescent.

Note: "Wernerite" is a popular, but obsolete name for an intermediate member of the marialite-meionite series of the scapolite group.

Originally posted by Chris Clemens on Nature's Rainbows in 2016.

Fluorescence under longwave UV light.

Fluorescence under shortwave UV light.

Normal light.

Summary of luminescence responses:

Diopside (Mindat) (RRUFF)

• Fluorescence under Longwave (365nm LED) UV light: Blue
• Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Blue

• Fluorescence under Longwave (365nm LED) UV light: Yellow