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the hardness would be like a 25
Extremely iron-rich olivine is rare, but is present in some nepheline syenite. Other minerals common in minor amounts include sodium-rich pyroxene, biotite.
Igneous Rock
Trachyite is the extrusive equivalent of syenite.
You can submit them through a few different sites or buy a price guide. try http://www.hummelshummels.com - they have submissions for free and also a price guide. You can also try www.ValueMyCollection.com to price Hummel collections as well as BUY-SELL-TRADE with out Hummel collectors.
the hardness would be like a 25
Charles Jacob Koenig has written: 'Literature abstracts of ceramic applications of nepheline syenite' -- subject(s): Bibliography, Nepheline syenite, Syenite, Ceramics
An agpaite is any of a variety of peralkaline igneous rocks, particularly nepheline syenite or phonolite.
Nephrite is a gemstone. It begins with the letter n.
Extremely iron-rich olivine is rare, but is present in some nepheline syenite. Other minerals common in minor amounts include sodium-rich pyroxene, biotite.
Syenite is not granitic. Quartz is one of the main minerals found in granitic rock. Syenite contains little or no quartz, but otherwise has the same general composition as granite.
Syenite is not a common rock, some of the more important occurrences being in new-england, arkansas, montana, new-york(syenite gneiss), switzerland, germany, and norway
Extremely iron-rich olivine is rare, but is present in some nepheline syenite. Other minerals common in minor amounts include sodium-rich pyroxene, biotite, titanite, zircon, iron oxides, apatite, fluorite, melanite garnet, and zircon. Cancrinite occurs in several nepheline-syenites.
silicates
It's found inside the Earth.
Igneous Rock
Trachyite is the extrusive equivalent of syenite.