Sets of U.S Rare Earth Element Minerals!

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In honor of one year on the web, Persson Rare Minerals is making up special sets of Rare Earth Element and rare element minerals from various important Western American localities. The sets will be available for a limited time for $50 USD plus shipping ($5.80 to anywhere in the U.S) and include samples of the following minerals:

 

1.) Fluocerite-(Ce):  Foxton, South Platte District, Jefferson County, Colorado- A nice, crude crystal measuring ~1.5 x 1 cm. with noticeable density from this classic NYF-type pegmatite.

2.) ‘Cyrtolite’ zircon and Thorite: Foxton, South Platte District, Jefferson County, Colorado- A solid specimen of intergrown (and partially psuedomorphed) rare earth element and hafnium-rich ‘cyrtolite’ zircon and waxy red Thorite-(Fe) from an interesting occurrence; intergrown with large meter-sized biotite crystals in the outer intermediate zone of this unusual pegmatite. Average specimen is 3 x 2.5 cm.

3.) Columbite-(Mn) & Parsonsite: Mica Lode Pegmatite, Canon City, Fremont County Colorado. -A hefty, solid specimen of resinous black columbite with bright yellow parsonsite, a rare Pb-U phosphate, coating fracture surfaces. Historic material from this well-studied Colorado pegmatite. Average specimen is 3 x 2 x 2 cm.

4.) Thalenite-(Y) with yttrofluorite, allanite, & thorite: White Cloud Pegmatite, South Platte District, Jefferson County Colorado- A nice, rich specimen of this very rare yttrium silicate, enriched in heavy RE (HREE) elements such as ytterbium and lutetium. Average specimen size: 4 x 3 x 2 cm.

5.) Gadolinite-(Y) in yttrofluorite: White Cloud Pegmatite, South Platte District, Jefferson County, Colorado- A nice, rich specimen featuring resinous black masses of the yttrium beryllium species Gadolinite-(Y) to 2 cm. in a matrix of yttrium-rich fluorite, which fluoresces an eerie greenish-blue color under shortwave U.V light. Average specimen size 5 x 4 x 3 cm.

6.) Bastnasite-(Ce): South Platte District, Jefferson County, Colorado- A nice, solid mass of fine-grained brick-red Bastnasite-(Ce), which has replaced allanite-(Ce). Average specimen 5 x 4 x 3 cm.

7.) Aeschynite-(Y): Clora May Pegmatite, Trout Creek Pass, Chaffee County, Colorado- A nice, solid example of this rare ‘multiple oxide’ REE species, with HREE enrichment and the brilliant black luster characteristic of these species. Average specimen size 1.5 x 1 x 1 cm.

8.) Monazite-(Ce): Coats Pegmatite, Petaca, Rio Arriba County, New Mexico. -A nice, solid cleavage fragment of a large crystal of Monazite, which was described and analyzed by Spilde Et al. (2011) as having a somewhat unusual REE distribution for monazite. Average specimen size: 2 x 2 x 1 cm.

 

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