well crystallized and classic for the mine this is almost all Pyrite with some Galena matrix. Magnification shows the "ugly grey-black" coatings on the pyrites are micros of Friburgite in "cruller" form with what appears to be Dycrasite. A good reference piece for this prolific mine and not that ugly overall!
This type of Fluorite is distinctive for the Shangbao mine. The dodecahedron is flattened as would be expected in a Spinel Twin, the six square faces of the original cube form are glass clear like windows into the crystal and the other adjacent faces are frosted. There are some pretty purple phantoms and the crystal cluster is clear enough to see a mass of creamy dolomite inside the fluorite. The backside is heavily contacted but overall the condition and presentation is good. A pretty and inexpensive piece!
A very fine example of the better quality mimetite that had come from this area of Southern Thailand. There has been no more of this for several years and the area is considered unworkable now due to political problems. This is a lusterous sparkling miniature of glassy yellow crystals. This location is one of a very few great localities for crystalized mimetite worldwide. Like most others (Tsumeb, Pingtouling etc) Hat Yai no longer produces anything. Good specimens are fast becoming classics, and this is one.
A brilliant thumbnail of electric green gem garnets on matrix. For intense color and luster this is really as good as any of these can get. The largest crystal is 7mm, about the biggest size that can still have such a deep green color. Displays great, we have not seen any of this quality for many years !