Nathrop, Chaffee Co., Colorado, USA

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Brannerite : (U⁴⁺,Ca)(Ti,Fe³⁺)₂O₆
	California Mine, Upper Browns Creek area, Nathrop, Chaffee Co., Colorado, USA Crystal; 1.2cm long; A "Holy Grail" specimen for the collector of Colorado uranium and rare earth minerals. Very hard to find. Collection of Rudy Bolona.
	Photo ID: 145543 View Count: 212
Hematite : Fe₂O₃
	Ruby Mountain, Nathrop, Chaffee Co., Colorado, USA Hematite crystals on rhyolite matrix with quartz. Photo is about 2.8 mm in length. Specimen came from the give-away table at the Micromounter's Playroom, 2008 Rochester Mineralogical Symposium. Photo and specimen: Steve Stuart.
© SMS 2008	Photo ID: 163657 View Count: 143
Hematite : Fe₂O₃
	Ruby Mountain, Nathrop, Chaffee Co., Colorado, USA Hematite associated with quartz on rhyolite matrix. Photo is about 2.1 mm in length. Photo and specimen: Steve Stuart.
© SMS 2008	Photo ID: 163789 View Count: 79
Molybdenite : MoS₂, Beryl : Be₃Al₂Si₆O₁₈
	California Mine, Upper Browns Creek area, Nathrop, Chaffee Co., Colorado, USA A flat plate-like matrix measuring 9.3 x 6.5 x 1.3 cm in size, this mostly coated on both sides by bright flaky metallic silver crystallized molybdenite. Minor beryl in association makes for an interesting example for the species. Ex Don Belsher collection. Ref: Rocks & Minerals:59:15 & 64:7.
© Dan Weinrich	Photo ID: 135993 View Count: 118
Molybdenite : MoS₂, Beryl : Be₃Al₂Si₆O₁₈
	California Mine, Upper Browns Creek area, Nathrop, Chaffee Co., Colorado, USA A 11.3 x 7.4 x 6.9 cm quartz/beryl matrix, one side almost completely covered by shiny metallic silver crystalline molybdenite. Nice cabinet sized locality piece for the species/locality. Ex Don Belsher collection.
© Dan & Diana Weinrich Minerals	Photo ID: 266830 View Count: 14
Obsidian
	Ruby Mountain, Nathrop, Chaffee Co., Colorado, USA Black Obsidian "Apache Tears" in light-gray opalescent perlite matrix (6.5cm by 5.0cm) self collected at field camp in 1997 at Ruby Mountain near Nathrope, Chaffee County, Colorado. Photo by and in the collection of J. Nemitz.
© jnemitz	Photo ID: 231442 View Count: 38
Obsidian
	Ruby Mountain, Nathrop, Chaffee Co., Colorado, USA Black Obsidian (3.5cm by 3.2cm) self-collected at fieldcamp in 1997 at Ruby Mountain near Nathrop, Chaffee County, Colorado. Photo by and the collection of J. Nemitz.
© jnemitz	Photo ID: 231443 View Count: 33
Obsidian (Var: Mahogany Obsidian)
	Ruby Mountain, Nathrop, Chaffee Co., Colorado, USA Red and Black Obsidian var. Mahogany Obisidian (5.0cm by 4.2cm) self-collected at field camp in 1997 from Ruby Mountain near Nathrop, Chaffee County, Colorado. Photo by and in the collection of J. Nemitz.
© jnemitz	Photo ID: 231444 View Count: 43
Pseudobrookite : Fe₂TiO₅
	Ruby Mountain, Nathrop, Chaffee Co., Colorado, USA Pseudobrookite needle on rhyolite matrix. Photo is about 2.1 mm in length. Specimen came from the give-away table at the Micromounter's Playroom, 2008 Rochester Mineralogical Symposium. Photo and specimen: Steve Stuart.
© SMS 2008	Photo ID: 163632 View Count: 96
Pseudobrookite : Fe₂TiO₅
	Ruby Mountain, Nathrop, Chaffee Co., Colorado, USA Pseudobrookite crystal cluster. Photo is about 2.1 mm in length. Specimen came from the give-away table at the Micromounter's Playroom, 2008 Rochester Mineralogical Symposium. Photo and specimen: Steve Stuart.
© SMS 2008	Photo ID: 163633 View Count: 74