/sci/ - Science & Math » Thread #10813799

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Anonymous Wed 17 Jul 07:54:33 2019 No.10813799 View Reply Original Report

Quoted By: >>10813905 >>10813996 >>10814298 >>10815132

What does the comma between zinc and copper mean?

Anonymous

Anonymous Wed 17 Jul 2019 08:15:12 No.10813844 Report

Quoted By: >>10813996

bumping your thread, good question

maybe it's a typo - or less likely it's some combination or alternative

Anonymous

Anonymous Wed 17 Jul 2019 08:57:58 No.10813898 Report

Quoted By: >>10813901

Why does it look like a fucking creampie?

Anonymous

Anonymous Wed 17 Jul 2019 09:01:06 No.10813901 Report

Quoted By:

>>10813898
Your mother is a pos cook.

Anonymous

Anonymous Wed 17 Jul 2019 09:05:03 No.10813905 Report

Quoted By:

>>10813799
true

Anonymous

Anonymous Wed 17 Jul 2019 10:01:53 No.10813996 Report

Quoted By:

>>10813799
>>10813844
It means Copper or Zinc may have variable amounts but still is Rosasite. I.E. more copper than zinc or more zinc than copper.

t. 3rd year biochemistry brainlet

Anonymous

Anonymous Wed 17 Jul 2019 10:05:54 No.10814010 Report

Quoted By: >>10814024 >>10814202 >>10814699

Many minerals arent stoichiometric, sometimes there is more of that element than the other. They are not pure chemicals like you find in lab. For example if you reduce sand with charcoal you dont get pure silicon, but you get Si,Fe. Same in nature sometimes there is more zinc and less copper on the mineral other than ratio 1:1. Its very typical for FeO too.

Anonymous

Anonymous Wed 17 Jul 2019 10:10:08 No.10814024 Report

Quoted By:

>>10814010
this, in OP pic you can clearly see different shades, the ones with higher copper ratio have a zad bit darker green wheres the ones with more zinc have more of a light green

Anonymous

Anonymous Wed 17 Jul 2019 11:55:39 No.10814202 Report

Quoted By:

Mostly this >>10814010
The oxidation state is the same (+2) so if you swap out some copper ions/atoms for zinc then nothing much changes, this happens naturally in lots of minerals with similarly sized metal ions. The size is important though because of crystal packing, if you try to stuff some ions that are too big into a smaller hole then it would mess up the structure

Anonymous

Anonymous Wed 17 Jul 2019 13:11:55 No.10814298 Report

Quoted By:

>>10813799
A lot of crystals and gems needs small impurities of other elements to give them their characteristics.
Sort of how Corundum can be a Sapphire, or Ruby depending on how much elemental aluminum snuck in there during its formation.
Maybe its that.
I don't know man, my mineralogy is pretty rusty.

Anonymous

Anonymous Wed 17 Jul 2019 13:14:37 No.10814307 Report

Quoted By: >>10814326

Put simply: The cation area of the crystal lattice can have varied amounts of either copper or zinc.

Anonymous

Anonymous Wed 17 Jul 2019 13:23:11 No.10814326 Report

Quoted By:

>>10814307
Same person: to get a better idea, look at the Wikipedia page for Apatite. The anion spot in the crystal lattice can be dominated by F, Cl, or OH. Each of these different variations have different diapheneities as well as other physical/chemical properties. For example the OH version called hydroxyapatite plays a role in the composition of our tooth enamel and bone. The F version is called flouroapatite and because the anion in this case, F, has a similar charge and radius to OH. Fluorinated water will exchange with OH anion units and strengthen tooth enamel.

Anonymous

Anonymous Wed 17 Jul 2019 16:21:33 No.10814699 Report

Quoted By:

>>10814010
Thanks

Anonymous

Anonymous Wed 17 Jul 2019 19:32:08 No.10815132 Report

Quoted By:

>>10813799
It's a solid solution, Cu and Zn take the same position in the crystal lattice and don't change it enough to mae it incompatible to the other metal.
This means the amount is Cu(n)Zn(2-n).
Look up Olivine (Mg,Fe)SiO4

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