Material to Identify

While looking through my clay materials I ran across this jar.

Jar of Material

The jar is not labeled.

Open Jar of Material

So what is it?

In 1996 I was teaching at a community college in California. I arrived one evening to find a hall filled with bags and jars of materials. Apparently someone donated them not knowing that it was necessary to have an MSDS for each. There was all sorts of toxic stuff, lead and the like, and this jar. I brought it home and put it in a box until this weekend.

The material looked vaguely familiar, but couldn’t place it.


The unidentified material next to granular rutile. The unidentified is on the left, granular rutile is on the right.

And a closer look at each–

Unknown Material

Granular Rutile

I sent images to an artist friend who worked for a clay company for several years. He suggested it might be Ilmenite. Rather than looking through Conrad, I googled Ilmenite and found this on Wikipedia

Ilmenite is the titanium-iron oxide mineral with the idealized formula FeTiO3. It is a weakly magnetic black or steel-gray solid. From the commercial perspective, ilmenite is the most important ore of titanium.

Magnetic??? I gave the material a quick test. I grabbed my telescoping magnet. When I placed the magnet near the material this happened–


Curious where ilmenite could have been mined and found this information of the

Encyclopedia Britannia site–

Ilmenite… forms large masses, as in Iron Mountain, Wyo., and in the Ilmen Mountains, Russia, from which it derives its name.

The reason I was looking through my clay materials was to find possible materials for use in concrete.

Time to test.

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