Hi, All. I recently returned from a trip to La Trinidad, Queretaro State, MX. I purchased a bit larger than softball sized rock which has quite a few fire opals in the matrix. I live in MX during the winter and will be returning to the US at the end of April, and would like to have the rock inspected to see if there is enough material to have a few opals cut and polished. I am enclosing a photo via Imgur of the specimen. It is from the Carbonea Mine outside of La Trinidad in Tesquisquiapan.
Comments and concerns appreciated! I will be bringing the specimen back with me to the US.
Deb in Puerto Vallarta, MX