Clinoptilolite (Na,K,Ca) 2‐3 Al 3 (Al,Si) 2 Si 13 O 36 ∙12H 2 O

[Henri]

Hello,

Can someone give me the simplified chemical formula and molar mass of Clinoptilolite.
I tested the formulas below on webqc but I got no answer

(Na,K,Ca) 2‐3 Al 3 (Al,Si) 2 Si 13 O 36 ∙12H 2 O

(Na,K,Ca)₂–3Al₃ (Al,Si)₂ Si₁₃ O₃₆•12H₂O

Formula found on wikipedia

Thanks in advance

[Benzene]

Hello Henri!

The molecular formula of clinoptilolite is H₆AlCaKNaO₃Si and the molecular weight is 211.2789 g/mol.
You can see the Chemical Data in the screenshot below:

The source is trustworthy.

Krgds,
Benzene

[Henri]

Hello,
Thanks for your answer but you give me the molecular formula of

Clinoptilolite ((K0-1Na0-1Ca0-0.5)₆(Al₆Si₃₀O₇₂).20H₂O)

and I am looking for the molecular formula of

Clinoptilolite Na,K,Ca)₂–3Al₃ (Al,Si)₂ Si₁₃ O₃₆•12H₂O

Which seems different to me but I could be wrong because I am not a chemist.

Can you confirm that these two molecular formulas are identical
Thanks
(translation with google translate)

[ChenBeier]

It is not possible, because Na,K,Ca 2-3 and Al₃, (Al,Si)₂ can differ in the formula.you have to know the exactly molecule. Na, K, Ca ,Al and Si are exchangable.

Given value for calcium compound

http://webmineral.com/data/Clinoptilolite-Ca.shtml

[michaeljordan]

The matter is clear and clarified. Na,K,Ca 2-3 and Al₃, (Al,Si)₂ are definitely different in formula. We need to learn more about these substances if we want to prepare anything.
slope run

[bevis0405]

These kinds of notations are typical in geochemistry, mineralogy, and solid-state chemistry, especially when discussing substitution within a mineral lattice.