Rare Locality BISMUTITE W BISMUTHINITE - - Bigger Mica Mine, Fenders, Colorado
Item History & Price
| Reference Number: Avaluer:20216526 |
I'm pleased to offer this specimen of Bismutite with sparse Bismuthinite from the Bigger Mica mine, near Fenders, Jefferson County, Colorado. The specimen measures 1.47 x .95 x .92 inches or 3.74 x 2.40 x 2.34cm and is nearly all bismutite with sparse dark metallic bismuthinite. This is an old piece from a collection that I was allowed to pick from recently.
The Bigger Mica mine was last worked in the late 1930s for scrap mica and is a relatively obscure locality. I fo...und one report online that mentioned the presence of large beryl crystal sections present on the dumps---as much as two tons were estimated to be present. Bismuth minerals are sometimes found as pods within pegmatites---these are easily mined out and either processed or discarded. This is a rich, solid and pleasantly colored mass of bismutite from a very obscure locality!
Please check my feedback and my other items. All specimens are carefully wrapped, come with complete and accurate labels and are quickly shipped. As always, your complete satisfaction is unconditionally guaranteed and I even offer FREE return shipping on any item that fails to satisfy for any reason---you can't go wrong. I'm reminded of the firm pledge printed on the old Foote Mineral Company mineral catalogs from more than a century ago,
"Quality of specimens is assured as we permit return of specimens at our expense."
Thanks for looking!
The Bigger Mica mine was last worked in the late 1930s for scrap mica and is a relatively obscure locality. I fo...und one report online that mentioned the presence of large beryl crystal sections present on the dumps---as much as two tons were estimated to be present. Bismuth minerals are sometimes found as pods within pegmatites---these are easily mined out and either processed or discarded. This is a rich, solid and pleasantly colored mass of bismutite from a very obscure locality!
Please check my feedback and my other items. All specimens are carefully wrapped, come with complete and accurate labels and are quickly shipped. As always, your complete satisfaction is unconditionally guaranteed and I even offer FREE return shipping on any item that fails to satisfy for any reason---you can't go wrong. I'm reminded of the firm pledge printed on the old Foote Mineral Company mineral catalogs from more than a century ago,
"Quality of specimens is assured as we permit return of specimens at our expense."
Thanks for looking!
