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#1

Dappa
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From: Beechworth, VIC
Joined: 27 March 2018
Posts: 33
Member
08 July 2018 11:01 pm

Sorry bit of a noob but can anyone tell me what the best way to clean quartz is ??


Adapt Improvise Overcome

#2

Heatho
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From: Sydney, NSW
Joined: 29 April 2013
Posts: 12,686
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09 July 2018 08:51 am

Oxalic acid, you can get it from Bunnings.

https://www.bunnings.com.au/diggers-2kg … r_p0960276


Minelab GPX 5000, SDC2300, CTX3030, Equinox 800, patience, lot's of patience.

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#3

Lefty
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Joined: 01 May 2014
Posts: 1,668
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09 July 2018 09:01 am

Gday Dappa. Yep, I've gotten ok results using the stuff Heatho mentions. Just be sure to wear safety glasses, gloves etc. I saw a nice quartz cluster a while back that bloke said had been cleaned in hydrochloric acid but you'd want to be extremely careful. Just like any cleaning chemical.

If the crystal faces are scaly, oxalic acid may not make them shiny. I've not actually succeeded in getting quartz to etch with anything yet - it's chemically different to glass and a lot harder then most normal glass types - but it might pay not to leave them in solution too long all the same.

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#4

Dappa
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From: Beechworth, VIC
Joined: 27 March 2018
Posts: 33
Member
09 July 2018 03:20 pm

Thks guys will give it a try let you guys know i'll get some before and afters as well smile


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#5

Dappa
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From: Beechworth, VIC
Joined: 27 March 2018
Posts: 33
Member
10 July 2018 06:39 pm

Heatho wrote:

Oxalic acid, you can get it from Bunnings.

https://www.bunnings.com.au/diggers-2kg … r_p0960276

heatho i ve found this stuff but its a powder how strong do u mix it ?


Adapt Improvise Overcome

#6

Mackka
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From: Brisbane
Joined: 18 February 2014
Posts: 3,029
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10 July 2018 07:17 pm

What does it say on the container instructions?
Mackka

#7

Dron
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From: Wollongong, NSW
Joined: 06 March 2016
Posts: 191
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10 July 2018 08:26 pm

There's a recipe on this site, you might have to convert to metric units ... https://www.mindat.org/article.php/403/Cleaning+Quartz

The reaction rate is increased by using hot water. Be careful with acid and dispose of it thoughtfully.


SDC2300 aka "The Birdshot Bandit" + SP01 + Gog Phones. Equinox 800 aka "Johnny kNOXville" + Tyger Snake digger. Wollongong based.

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#8

Mackka
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From: Brisbane
Joined: 18 February 2014
Posts: 3,029
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11 July 2018 07:27 am

Acid to water and never the opposite.
Mackka

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#9

RockRat
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Joined: 26 May 2018
Posts: 69
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11 July 2018 09:06 pm

thumbsup

1 user likes this post: Mackka

#10

Dihusky
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From: Gold Coast, QLD
Joined: 16 June 2017
Posts: 320
Member
12 July 2018 08:59 am

Dappa wrote:
Heatho wrote:

Oxalic acid, you can get it from Bunnings.

https://www.bunnings.com.au/diggers-2kg … r_p0960276

heatho i ve found this stuff but its a powder how strong do u mix it ?

Doubt that this will have much of an effect, it is a mild alkali not acid, works more like a soap.

Not sure what type of acid you want, but for a mild one you could start with Rust Converter, this is based on Phosphoric Acid and you can get it in small bottles. It is already diluted so reasonably safe to handle. To go stronger the most readily available acid is pool acid, but this you MUST dilute.

#11

Heatho
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From: Sydney, NSW
Joined: 29 April 2013
Posts: 12,686
Moderator
12 July 2018 09:25 am

With a ph of 1 oxalic acid is certainly 100% not an alkali, it would not be called an acid if that was the case......

Oxalic acid IS well known and IS the prefered method for removing iron stains off quartz crystals!

https://www.mamasminerals.com/How-To-Cl … p_149.html


Minelab GPX 5000, SDC2300, CTX3030, Equinox 800, patience, lot's of patience.

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#12

LoneWolf
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From: Gold Coast, QLD
Joined: 12 April 2016
Posts: 1,853
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14 July 2018 10:27 am

Don't leave them in the Acid solution for too long or you may end up with Green Crystals...

LW.....


Growing Old is Inevitable.... Growing Up is Optional.... Prospectors United Will Never Be Defeated

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