Mineralpedia Details for Diopside
Named for the Greek dyo, from which the prefix di- gets its origin to represent “two,” and opsi, meaning “face,” in reference to the two possible orientations of the vertical prism. Diopside is a relatively common mineral that can be found of fine quality in localities in Austria, Italy, Finland, Russia, Canada, the United States, Madagascar, China, Afghanistan, India, and Pakistan, among many other general localities. It occurs commonly in skarn, calcium and magnesium rich gneiss and schist, kimberlites, and peridotites and is typical of metamorphosed silicious calcium and magnesium rich rocks in the pyroxene-hornfels and epidote-amphibolite facies. Less commonly, Diopside can be found in alkaline olivine basalt and andesite.
Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/diopside.pdf
- Crystal System
- Crystal Habit
- Prismatic, Blocky, Granular
- Good, Indistinct, None
- Vitreous (Glassy)
- blue, brown, colorless, green, gray
- white green
- Monoclinic - Prismatic
- Brittle - Conchoidal
- View Diopside
- View Diopside
Diopside from Azrat Syed, Kokcha Valley, Badakhshan, Afghanistan
A single, deep green, translucent, terminated crystal to 1.3cm with the typical vitreous luster in which a lot of Dioside seems to have.
Diopside from Outokumpu, Finland
Deep, rich green prismatic chromian Diopside crystals to 2cm, terminated on the front side and longer crystals showing on the back side. Excellent showy specimen.
Diopside from Sterling Hill mine, Ogdensburg, Sussex Co., New Jersey, United States
Once called zinc Schefferite, later redescribed and found to be just a variety of Diopside with a platy reddish color and habit. Also Rhodonite and Andradite in this matreix.
Diopside from Betroka dist., Anosy, Tuléar prov., Madagascar
An excellent well-formed crystal showing good green color. Ex. Karl & Anne Vossbrinck collection (see prov. tab).
Diopside from Rossie, St. Lawrence Co., New York, United States
Dioside is a common rock-forming mineral and is usually found in matrix as smaller 1cm or less crystals. This specimen however, is collector quality. It is a single doubly terminated crystal with excellent shape and terminations.
Diopside from Ilmeny Mts., South Urals, Russia
Large light green Diopside crystals to 2cm embedded in skarn-type rock matrix with likely white Tremolite. By rocking the specimen back-and-forth, the Diospide crystals are easily seen.
Diopside from Mulvaney property, St. Lawrence Co., New York, United States
Translucent green prosmatic crystals to 8mm, but mostly 5mm, in white Albite with brown, wedge-shaped Titanite crystals.