I first saw this material 8 years ago. There were about a half dozen specimens available and I bought most of them. One of these specimens is featured on the cover of my new book on Chinese fluorescent minerals. I did not see a single piece of this material for the next 7 years. I finally tracked down a source in China last year and now have a few specimens for sale. This material comes in a wide range of patterns.
Mindat shows 11 separate mines in the Xianghualing Sn-polymetallic ore field. The most well know is Xianghualing Mine (Hsianghualing Mine). I am still trying to find out which specific mine this specimen came from.
Contact me if you have any questions. Be sure to check out my eBay store: Jim's Obscure Stuff for more fluorescent minerals and other unusual items.
Shipping
I use Fed Exp Ground for most of my domestic shipping. I only charge actual shipping costs with no extra charges for packing or shipping materials. I think I finally have combined shipping working on eBay. The automatic invoice from eBay should now have the correct shipping amount. If you see any problems with the shipping amount please let me know.