Tonalite
Tonalite is an igneous, plutonic (intrusive) rock, of felsic composition, with phaneritic texture. Feldspar is present as plagioclase (typically oligoclase or andesine) with 10% or less alkali feldspar. Quartz is present as more than 20% of the rock. Amphiboles and pyroxenes are common accessory minerals.
In older references tonalite is sometimes used as a synonym for quartz diorite. However the current IUGS classification defines tonalite as having greater than 20% quartz, while quartz diorite varies its quartz content from 5 to 20%.
The name is derived from the type locality of tonalites, adjacent to the Tonale Line, a major structural lineament and mountain pass, Tonale Pass, in the Italian and Austrian Alps.
Trondhjemite is an orthoclase-deficient variety of tonalite with minor biotite as the only mafic mineral, named after Norway's third largest city, Trondheim.
External links
Media related to Tonalite at Wikimedia Commons
Podcasts:
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by Danielle White
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by Danielle White
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by Danielle White
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by Danielle White
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by Danielle White
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by Danielle White
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by Tony Holiday
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by Tony Holiday
LOCOMOTION
by: Danielle WhiteEverybody's doin a brand new dance now
Come on baby, do the locomotion
I know you'll get to like it if you give it a chance now
Come on baby, do the locomotion...
My little baby sister can do it with ease
It's easier than learnin your ABC's
So come on, come on, do the locomotion with me...
You gotta swing your hips now
Come on baby, jump up,hmmmm jump back...
Well I think youve got the knack
Now that you can do it, lets make a chain now
Come on baby, do the locomotion
A chuga-chuga motion like a railway train
Come on baby, do the locomotion...
Do it nice and easy so you dont lose control
A little bit of rhythm and a lot of soul
So come on, come on, do the locomotion with me...
Do the locomotion...
Do the locomotion...
Yay, yay, yay, yeah...
Move around the floor in a locomotion
Come on baby, do the locomotion
Do it holding hands like you got the notion
Come on baby, do the locomotion...
There's never been a dance thats so easy to do
It even makes you happy when youre feeling blue
So come on, come on, do the locomotion with me...
You've gotta swing your hips now
Come on baby, jump up, jump back
Well i think youve got the nack
Woah, woah
Everybodys doin the brand new dance now
Come on baby, do the locomotion
I know you'll get to like it if you give it a chance now
Come on baby, do the locomotion...
Do it nice and easy now dont loose control
A little bit of rhythm and a lotta soul
So come on, come on, do the locomotion
Come on, come on, do the locomotion
Come on, come on, do the locomotion with me