diallage

American  

[dahy-uh-lij] / ˈdaɪ ə lɪdʒ /

noun

Mineralogy.

1. a variety of diopside with a laminated structure, found in gabbro and other igneous rocks.

---

diallage British  

/ ˈdaɪəlɪdʒ /

noun

1. a green or brownish-black variety of the mineral augite in the form of layers of platelike crystals

---

Etymology

Origin of diallage

1795–1805; < French < Greek diallagḗ interchange, change, noun derivative from base of diallássein make an exchange, equivalent to di- di- ³ + allássein to change, exchange

Example Sentences

See Examples For:

diallage

The following minerals produce beads with a small quantity of soda, but with the addition of more produce slags: tabular spar, diallage, hypersthene, epidote, zoisite.

From A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations by Anonymous

In some gabbros and norites reaction rims of fibrous hornblende are found around both hypersthene and diallage where these are in contact with felspar.

From Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 4 "G" to "Gaskell, Elizabeth" by Various

These diabases, as they will be called generically, are usually composed of plagioclase feldspar, and diallage or augite; additional and rarer minerals are quartz, olivine, hypersthene, magnetite, ilmenite, and hornblende.

From History and Comprehensive Description of Loudoun County, Virginia by Head, James William

It contains no garnet or amphibole, but metalloid diallage disseminated in the mass.

From Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 3 by Humboldt, Alexander von

I found in it a few garnets, but no metaloid diallage.

From Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 1 by Ross, Thomasina