Has anyone figured out a way to polish calcite? I know its soft but there must be a way. I gathered up some nice pink ornamental stone used to put around shrubs, etc. I put it through the Vibe with AO with no shine results. I run the polish cycle again with TO and still no results. I cushioned pretty well with ceramic and soap but it just didn't take a shine. Has any one been able to shine the stuff?
God of Multiple Parallel Universes Full of Rocks and Apprentice to THE ONE.
Calcite and the tumbler are not friends! Basically you end up with a calcite slurry! And polishing works pretty good with calcite. I tried cabbing some but pretty much failed as the calcite was just too soft for my heavy handed ways.
I can't tell if thats some Gneiss Schist, or that Schist is Gneiss. All I know is don't take it for Granite
Post by Hard Rock Cafe on Mar 7, 2011 11:48:20 GMT -5
Here's why it doesn't work in a tumbler, from wikipedia: "Calcite can be either dissolved by groundwater or precipitated by groundwater, depending on several factors including the water temperature, pH, and dissolved ion concentrations. Although calcite is fairly insoluble in cold water, acidity can cause dissolution of calcite and release of carbon dioxide gas. Calcite exhibits an unusual characteristic called retrograde solubility in which it becomes less soluble in water as the temperature increases. When conditions are right for precipitation, calcite forms mineral coatings that cement the existing rock grains together or it can fill fractures."
Some rocks aspire to greatness; others are destined to be grit carriers.
Post by deb193redux on Mar 9, 2011 14:33:08 GMT -5
tweaking the pH to prevent it dissolving is a very neat idea. I have a dim memory of something similar for cleaning iron off of calcite crystals without dissolving them. But I think soft still presents a problem.
mr.mohs: Don & I fared well Jean... thnxs for asking! Luckily the electric didn't go off the other 1/2 of town did...outside this morning looks like Godzilla was on the loose !
Sept 1, 2015 19:18:45 GMT -5
drocknut: Glad you and Don fared well, Ed.
Sept 1, 2015 19:24:04 GMT -5
drocknut: I'm fine Ed, a little warm still but I'll survive. Thanks for asking. By the way, dinner and dessert were excellent; I may have to come back for seconds...lol. Thanks Scott.
Sept 1, 2015 19:32:12 GMT -5
mr.mohs: I got frozen rainbow sherbet ... .... any time...mostly
Sept 1, 2015 19:43:15 GMT -5
$hotgunner: You are welcome.
Sept 2, 2015 11:01:13 GMT -5
wampidy: Scott, there are thousands in the Ukraine that want to get the hell out of Dodge because they do not like gun fights in the streets. Men count is low for some reason too. Just be careful what you wish for and be aware of scammers.
Sept 4, 2015 20:44:15 GMT -5
wampidy: Gotta watch out for all the immigrants that hate immigrants on every corner here too. Good side is these ladies look like most of the original immigrants that aren't immigrants.
Sept 4, 2015 20:47:37 GMT -5
$hotgunner: I'm on the phone now!!! Thanks Jim but no imported babes for me!
Sept 4, 2015 21:01:12 GMT -5
mr.mohs: my best friend married a woman from Russia...he blamed me...mostly
Sept 4, 2015 22:04:20 GMT -5
$hotgunner: Ed the Russians will steal your wealth soon as they get a green card. Seen it three times, same guy!
Sept 4, 2015 23:13:42 GMT -5