Finding Local Minerals


(Difference between revisions)
Jump to: navigation, search
Line 42: Line 42:
[[Category:Type 3]]
[[Category:Type 3]]

Current revision as of 12:51, 9 August 2012

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


Andre Martinez on Finding Local Minerals

Finding Local Limestone

Finding local limestone 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. Starting with areas close by, the first thing I do is look on as many different maps as I can find for the quarry symbol (2 crossed pick axes).
  2. Once I locate that symbol, 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's being quarried there.
  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 two very important things; the minerals in the area and the timeframe or "period" of the exposed earth. So in the example to the right, 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 the quarry, what are they mining, how they're processing and their contact info. When I looked at some of the more detailed maps, each 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 the link, I discovered the Colorado Lien Co. along with their contact information. I contacted them to ask what they were 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 about 4 miles away for quick lime and Type S lime. I visited their operation 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. This company is 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. 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 into this?
  • 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 needed for intermixing lime with Proceed Textures but one project has been reported as a Marmorino style finish, 42,000 square feet of wall and ceiling and the materials costs were $700 with 2 days of mixing.

Mixing a putty of hydrated lime or Type S Lime into Proceed Textures works well with Smooth Translucent Texture. 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.

External links

Personal tools