Mineralpedia Details for Jennite
Jennite
Named to honor Colonel Clarence M. Jenni who was Director of the geological Museum at the University of Missouri at Rollo, USA and was the discoverer of the mineral. Jennite is a rare late stage mineral that occurs partially filling open spaces and veins in fractured skarns. It can be found in the United States, Italy, Germany, Israel, South Africa, and Japan.
Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/jennite.pdf
- Formula
- Ca9Si6O16(OH)10ยท6H2O
- Crystal System
- Triclinic
- Crystal Habit
- Bladed, Platy
- Cleavage
- Distinct, None, None
- Luster
- Vitreous (Glassy)
- Color
- white
- Streak
- white
- Class
- Triclinic - Pinacoidal
- Hardness
- 3.5
- WebMineral
- View Jennite
- Mindat
- View Jennite
Jennite from Commercial quarry, Crestmore, Riverside Co., California, United States
Small, less than 1cm, specimen with white, matted, fibrous crystals to 1-2mm.
Click thumbnail images for larger view.
