Help Breaking this down?

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janacarole
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Help Breaking this down?

Post by janacarole »

I am trying to research results from an XRD Analysis on a natural mineral and one of the minerals shows as follows:

(K0.77Al1.93(Al0.5Si3.5O10)(OH)2) the mineral listed with it is Muscovite

I put this formula in this websites chemical formula calculator and it does not read it. I took the zero's out for example: K0.77 and made it K.77 and the calculator still couldn't read it.

Any help is appreciated, I am not a chemist/scientist I am simply a business manager trying to figure this mineral out. :)
expert
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Post by expert »

The calculator somehow doesn't like fractions. I multiplied everything by x100 and calculated the following (K77Al193(Al50Si350O1000)(OH)200)
The result

Molar mass of (K77Al193(Al50Si350O1000)(OH)200) is 38797.8760 g/mol

Actual result divide by 100 = 387.98 g/mol


Symbol

Element

Atomic weight

Atoms

Mass percent

K Potassium 39.0983 77 7.7596 %
Al Aluminum 26.9815386 243 16.8992 %
O Oxygen 15.9994 1200 49.4854 %
H Hydrogen 1.00794 200 0.5196 %
Si Silicon 28.0855 350 25.3362 %

By the way, molar mass for minerals doesn't make much sense because it is a polymeric material. Actual mineral is even more complex http://rruff.info/Muscovite/R040104
Remember safety first! Check MSDS and consult with professionals before performing risky experiments.
janacarole
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Posts: 2
Joined: Fri Oct 07, 2016 11:11 am
Location: Texas

Thank you!

Post by janacarole »

This stuff is greek to me but has been interesting to research and figure out what each one is good for or not good for.

I appreciate your response :)
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