They are called “anthill garnets” because they are found on and around the margins of anthills. The ants encounter the garnets while excavating their underground passages, haul them to the surface and discard them.
DonorsChoose.org is a website where K-12 teachers post projects that they would like to have funded and anyone anywhere can provide support. Many of these teachers would like to have materials to help them teach about rocks and minerals. Here are three projects that might appeal to you.
““Iris Agate” is a name used for a finely-banded agate that produces a spectacular display of color when it is cut properly and illuminated from a direction that sends light through its very thin bands.”
Mineral hardness picks are pencil-like tools that have points made from materials that match the hardness of minerals in the Mohs Hardness Scale. With them you can easily test the hardness of mineral grains in a rock and test the hardness of small-size specimens. In our opinion they are easier to use than pieces of minerals and allow you to obtain more accurate results.
Labradorite is a feldspar mineral of the plagioclase series. Some specimens exhibit a schiller effect, which is a strong play of iridescent blue, green, red, orange, and yellow colors. Labradorite is so well known for these spectacular displays of color that the phenomenon is known as “labradorescence.”
A few minerals have an interesting physical property known as “fluorescence”. These minerals have the ability to temporarily absorb a small amount of light and an instant later release a small amount of light of a different wavelength.
“The Bureau of Economic Geology frequently fields calls from the general public to find information about clay deposits, uranium site locations, sand and gravel deposits, or what
resources, in general, are located at or around a specific location. The interactive Map provides the public with the means to search out locations on their own, and click on the points of interest, bringing up pertinent information…”
For more information about the map see the “Under the Radar..” section here.