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: sound like you were forked on the job
Nov 18, 2014 11:57:13 GMT -5
drocknut: Glad you got it started Tony.
Nov 18, 2014 14:53:38 GMT -5
drocknut: doing my happy dance right now because my fridge started working so for now I won't have to call the mobile rv repairman to fix it. Fingers crossed that it keeps working and my tanks thaw soon.
Nov 18, 2014 15:09:01 GMT -5
mr.mohs: strange story Diane I thought that said mobile t.v. repairman
Nov 18, 2014 16:26:33 GMT -5
Fossilman: Are ya' packing up while the thaw is going on?? South lookin' better all the time,I bet!! LOL
Nov 18, 2014 16:59:39 GMT -5
snowmom: It was a comet!
Nov 19, 2014 4:41:15 GMT -5
Nov 19, 2014 4:41:31 GMT -5
glennz01: Only 2 more red rocks to cut up
Nov 20, 2014 16:33:37 GMT -5
snowmom: glennz01 don't forget the pictures!
Nov 20, 2014 17:09:41 GMT -5
Shotgunner: woohoo!! Cuttin' quartz! The saw is a slicing!
Nov 20, 2014 22:32:33 GMT -5
snowmom: Shotgunner don't forget the pictures! ( I sense a theme developing here)
Nov 21, 2014 6:24:15 GMT -5