The new Fluorite ranges from deep purple to transparent purple with phantoms, and is associated with Calcite and Goethite. It fluoresces bright red under long wave UV light. There were approximately 150 specimens found in total earlier this year, Fluorite has not been found at this location since 1983.
Also from Ojuela were new Willemite on Calcite specimens. These apparently look amazing under the microscope as the Willemite crystals are growing on sprays of Aurichalcite.
Sam Nassar holding one of the Willemite on Calcite specimens. Sam is recovering from a serious illness and it was great to see him back on his feet at the show.
IC Minerals also had spinel-twinned Fluorites from Erongo, Namibia. These were new last year, and have really interesting form.
Spinel twinned Fluorite from Erongo, Namibia.
Graeber and Himes had two included Quartz specimens that caught my eye. The first was this large Quartz with deep red inclusions, most likely of Rutile, from Hiddenite, North Carolina, USA.
Quartz with inclusions from Hiddenite, North Carolina, USA
The second was also a red included Quartz - an 'Eisenkiesel' or Iron Quartz from Florence Mine, Cumbria, England, circa 1960. I love these specimens, the small Quartz crystals are included by Hematite and sit like red glass crystals on the Hematite matrix.
'Eisenkiesel' Quartz included by Hematite from Florence Mine, Cumbria, England.
The Denver show always has excellent exhibits, and there were many following the fossil theme. Even the Colorado School of Mines, which is so well known for its collection of Colorado minerals had a great fossil display of fossil fish from the Green River Formation of southwestern Wyoming.
Fossil fish from the Green River Formation, southwestern Wyoming
Australian life through time, the display of Australian fossils by Wollongong University, NSW, Australia
An exhibit of Ammonite fossils Didymoceras showing the different growth stages. These fossils come from the Pierre Shale of South Dakota. Because of their distinctive bizarre form, and widespread occurence the Didymoceras have been designated as biostratigraphic index fossils to help correlate stratigraphy across Northern America.
The Society of Mineral Museum Professionals had a great display of fossils replaced by minerals:
Minerals replacing fossils.
Goethite after Snake skin - very cool
Chalcedony after Crinoid with fantastic detail.
A gorgeously iridescent Placenticeras intercalare fossil ammonite from the Bearpaw formation, Alberta, Canada.
There were still plenty of minerals exhibits at the show:
Colourful Calcites display from the Cincinnati Museum Centre.
The Sterling Hill Mining Museum had this excellent and educational display on identifying minerals by their cleavage, with a quiz set up to identify the minerals in the first two rows.
How cool is this Moogate, from the collection of Richard Tripp.
The Mineralogical Museum of Bonn, Germany had an excellent display concerning Real or Fake? I love the plastic fake Smoky Quartz and Amazonite specimen seen on the top right hand side in front of The Vug's Quarterly Magazine - Fakes edition.
Real or Fake? by the Mineralogical Museum of Bonn, Germany.
The Bonn Museum also had a display of a replica Bavarian crown, highly valued for its craftmanship, even though it was not made of gold and diamonds like its original counterpart. The crown was displayed as a tribute to Donna Chirnside, who sadly passed away in November 2008. Donna was a Special Exhibits Chairperson for many years at the Denver show.
One thing that is so good about the Denver show exhibits are the displays of self collected specimens. The sense of pride and accomplishment in both the hard work of finding the mineral specimens, and having them on display at a major mineral show must really be something.
The Hutchison Family collecting season 2009
and lastly the sort of mislabelling that everyone is happy to discover:
The Smithsonia Institute discovered that this specimen, which was sold to them as a very good Chalcocite was in fact a very rare Copper Bismuth Sulfide mineral Wittichenite. This specimen is one of the finest examples of the species known.
The Denver show ended with excellent timing to the weather, on Monday it changed dramatically from warm and sunny to very cold and wet, thankfully it was not like that on pack up day on Sunday.