Finding Local Minerals


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Revision as of 18:19, 26 June 2011

This page is about finding local minerals that can be used for making decorative painting and plastering materials.


Finding local lime stone

Finding local lime stone for making putties to use for plasters and paints can be simple with the help of mineral maps provided by the USGS (United States Geological Survey).

Mine map symbol
What a Quarry looks like on a map
Geological map
Key showing the mineral symbol
List of mineral type
Example search result
  1. There are a few maps you can use to help you find what you are looking for. The first thing I do is look on as many different maps as I can find for the Quarry symbol (2 crossed pick axes). I try to keep my search as close to my home as possible to start.
  2. Once I find one then I have to find the USGS map for that area in the greatest detail possible which is typically 1:24,000 scale. Sure enough, after closer examination there is a very large quarry there. Next we need to find out what is in it.
  3. The map we will use to find out what is in the Quarry is called the USGS Geological map. This map shows all of the known minerals in relation to the geography. It is usually a brightly colored map with a key that is very detailed. It will show you to very important things; one is the minerals in the area and two is the time frame or "period" of the exposed earth. So in this one we see light blue that according to the key is the "PiPif" and is a deposit of Limestone and sandstone from the Permian and Pennsylvanian age.
  4. Now I need to find out who owns it, what are they mining, how, and how do I get in touch with them. When I looked at some of the more detailed maps they said "Rex" next to the area. I started the Google search for "Rex Colorado" , "Rex Quarry" or "Rex Colorado Quarry" and there it was.
  5. When I clicked on it I discovered the Colorado Lien Co. along with their contact information. I contacted them and asked them what the where mining in that area and it was Calcite. I asked them what they were doing with it and they said they were processing it for lab and food grade calcium as well as processing it in a kiln that they have about 4 miles away for Quick lime and Type S lime. I asked them if I could visit their operation and the said yes and WOW!!!! a full mining operation of Calcium in every form I could ever need to make plasters; very fine Calcium powder, quick lime, Type S, calcium sand and more. Now these guys are pouring it into big trucks and don't have a packaging plant so it would be hard for me to commercialize it. That being said I asked them what they would charge me to fill up my truck and they gave it to me for free on the first visit and that supply lasted me for the first year. Now I go once a year and fill up on what I need and pay very little for it.

Questions to ask yourself

  • What? Knowing Geology pays off?! Yes, in fact I can now make lime putty (Lab grade 99% Hydrated Calcium Carbonate) for about $2 per 5 gallons.
  • What Proceed textures can I mix this into?
  • What else is out there?
  • What is near you? Garnet? Mica? Different colored sands?

Mixing with Lime with Proceed textures

There is some experimenting time that goes into intermixing lime into Proceed textures but projects have been reported to be made with a Marmorino style finish 42 thousand square feet of wall and ceiling and materials cost were $700 with 2 days of mixing.

Mixing a dry mix of hydrated lime or Type S Lime into Proceed textures works well Smooth Translucent Texture. The Smooth Translucent Texture can be mixed with Type S lime that has been hydrated with water and made into a putty. This will add a smooth stone like quality to the material making it similar to some of the smooth lime textures used in Venice now referred to as Venetian plaster.

You can also make a three part mixture of Smooth Translucent Texture: Lime putty made with Type S Lime: and Silica sand to resemble a traditional Roman Fresco.

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