Not to be confused with the rare earth-bearing phosphate mineral Monazite
Photomicrograph of thin section of monzonite (in plane polarised light)
Monzonite is an igneous intrusive rock. It is composed of approximately equal amounts of plagioclase and alkali feldspar, with less than 5% quartz by weight. It may contain minor amounts of hornblende, biotite and other minerals. If quartz constitutes greater than 5%, the rock is termed a quartz monzonite.
If the rock has a greater percentage of alkali feldspar, it grades into a syenite. With an increase in calcic plagioclase and mafic minerals the rock type becomes a diorite. The volcanic equivalent is the latite.
Monzonite was originally named after the Monzoni range in Val di Fassa (Trento Province - Italy) where it is abundant. As rock definitions have been systematized and codified, this association has lost any relevance to the rock's definition.
- ^ a b Le Maitre, R.W., Igneous Rocks: A Classification and Glossary of Terms Cambridge University Press, 2nd ed, pp. 113 ISBM 0-521-66215
- ^ a b Klein, Cornelis and Cornelius S. Hurlbut, Jr., Manual of Mineralogy, Wiley, 20th ed, pp. 480-484 ISBN 0-471-80580-7
Mon, 29 Jun 2015 20:56:15 -0700
The gorge walls were formed from types of granite like Kinsman Quartz Monzonite and Pegmatite Dikes. WOODSTOCK, N.H. —The Lost River Gorge and Boulder Caves in New Hampshire is expanding to include an "out-of-the-gorge" experience. 20 things ...
Mon, 29 Jun 2015 05:22:30 -0700
Further drilling will test for new zones of mineralization on the margins of the Central Monzonite Intrusion including the area of Mina La Bocona and the North Skarn zone and will test other geophysical and geochemical targets outboard of the Central ...
Dakota Financial News
Thu, 25 Jun 2015 19:15:00 -0700
Alacer Gold Corp logo Alacer Gold Corp (TSE:ASR) insider Vladimir Iorich sold 45,000 shares of the stock on the open market in a transaction that occurred on Thursday, June 25th. The shares were sold at an average price of C$2.90, for a total ...
Tue, 23 Jun 2015 05:56:15 -0700
The host rock in the resource area is primarily an impermeable biotite-monzonite intrusive and generally dry, and ground conditions have been rated as "fair to very good". The site is perfectly located, accessible by a good quality sealed and partly ...
Thu, 11 Jun 2015 11:45:00 -0700
The first narrows ends with a huge quartz monzonite chockstone wedged between the canyon walls. There is a make-shift trail that leads over and around this natural blockage and drops back to the beginning of the second narrows. The second narrows are ...
Thu, 18 Jun 2015 05:33:45 -0700
This reef is overlain by a 28-cm layer of barren monzonite. Above the monzonite layer,1.29 m of sulphide-mineralized metamelanogabbro and metapyroxenite containing about 10% sulphides in places, returned strongly anomalous palladium values including ...
Sat, 27 Jun 2015 05:45:00 -0700
The Company owns 80% interest in the Copler Gold Mine, which is an epithermal gold-silver-copper deposit, centered on a composite diorite to monzonite porphyry stock. The Company holds exploration licenses surrounding the Copler deposit cover a 15 ...
Wed, 24 Jun 2015 04:48:45 -0700
... is engaged mining, development, exploration and production of mineral deposits in Turkey. The Company owns 80% interest in the Copler Gold Mine, which is an epithermal gold-silver-copper deposit, centered on a composite diorite to monzonite ...
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