Clino-suenoite, Tremolite, Talc - Talcville, New York

Contributed by: FMS Admin
Date: May 3rd, 2026
Locality: International Talc Company Mine (Reynolds Mine), Talcville, Edwards, St. Lawrence County, New York, USA (See on Mindat)

Description:
This is a beautiful pair of 6-inch specimens from the talc mines in New York.

UPDATE: The original Nature's Rainbows post used the mineral, manganocummingtonite, in the title. The International Mineral Association (IMA) replaced the name manganocummingtonite with the name clino-suenoite for the mineral found at Talcville.

Originally posted by UV Studio on Nature's Rainbows in 2017.

Fluorescence under longwave UV light. Specimen 1.

Fluorescence under shortwave UV light. Specimen 1.

Normal light. Specimen 1.

Normal light. Specimen 2.

Fluorescence under longwave UV light. Specimen 2.

Fluorescence under shortwave UV light. Specimen 2.

Summary of luminescence responses:

Clino-Suenoite (Mindat) (RRUFF)

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

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

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