Elbaite, Cleavlandite, and Quartz -Tucson Gem & Mineral Show

This is Elbaite, Cleavlandite, and Quartz from the Barra de Salina, Coronel Murta, Minas Gerais, Brazil at the Tucson Gem & Mineral Show.

www.mindat.org/loc-390.html
Granite pegmatites, located west of Coronel Murta. Barra de Salinas ("the mouth of Salinas river") is a district of Coronel Murta municipality.

en.wikipedia.org/wiki/Elbaite
Elbaite, a sodium, lithium, aluminium boro-silicate, with the chemical composition Na(Li1.5Al1.5)Al6Si6O18(BO3)3(OH)4,[4] is a mineral species belonging to the six-member ring cyclosilicate tourmaline group.
As a gemstone, elbaite is a desirable member of the tourmaline group because of the variety and depth of its colours and quality of the crystals. Originally discovered on the island of Elba, Italy in 1913, it has since been found in many parts of the world. In 1994, a major locality was discovered in Canada, at O'Grady Lakes in the Yukon.
Elbaite forms in igneous and metamorphic rocks and veins in association with lepidolite, microcline, and spodumene in granite pegmatites; with andalusite and biotite in schist; and with molybdenite and cassiterite in massive hydrothermal replacement deposits.
Elbaite is allochromatic, meaning trace amounts of impurities can tint crystals, and it can be strongly pleochroic. Every color of the rainbow may be represented by elbaite, some exhibiting multicolor zonation. Microscopic acicular inclusions in some elbaite crystals show the cat's eye effect in polished cabochons.

www.mindat.org/min-7688.html
Cleavlandite. A variety of Albite
Named in 1823 by Henry J. Brooke in honor of Parker Cleaveland [January 15, 1780 Rowley (Byfield), Massachusetts, USA - August 15, 1758, in Brunswick, Maine, USA], professor of geology and mineralogy at Bowdoin College in Maine 1805-1858. In 1816 Cleaveland wrote the first mineralogy textbook authored by a citizen of the USA. Despite the title page date, the textbook was actually released in January 1817. The textbook was noted for its unification of European schools of thought and was also popular in its second edition of 1822. Cleavelandite had been described earlier in 1817 by Johann Friedrich Ludwig Hausmann with the name "kieselspath". In 1815, Hans Peter Eggertz named granular and radiated albite, probably identical to cleavelandite of Brooke. In 1936, Harold Lattimore Alling defined cleavelandite as a triclinic mineral, suggesting a difference from true albite as well as "analbite". Fisher (1968) studied cleavelandite from Chesterfield, Massachusetts, USA, the type locality, but did not study type specimens, and proposed that true cleavelandite should be restricted to warped platy masses of mineral with lamellae parallel to (010) and "lack other well-defined crystal faces, and may be twinned on the albite law". This definition would not include most specimens called "cleavelandite", especially those cleavelandites grown into open cavities, although such "cleavelandite" is also known from the type locality. The current use of the varietal name generally includes cavity hosted crystal aggregates.

www.visittucson.org/tucson-gem-mineral-fossil-showcase/
Every year the world-renowned Tucson Gem, Mineral & Fossil Showcase is like a time portal, a trip around the world, and a treasure hunt all rolled into one. Every winter, more than 65,000 guests from around the globe descend upon Tucson, AZ, to buy, sell, trade, and bear witness to rare and enchanting gems, minerals, and fossils at more than 50 gem show locations across the city. If you're planning a winter visit to Tucson, you won't want to miss this three-week-long event filled with shows, related events, a free day at the gem & mineral museum, and much, much more!
"Whether you’re looking for a $5 shimmering crystal necklace or a show-stopping $200,000 crystallized rock from an exotic location, the Tucson Gem, Mineral, & Fossil Shows have something for everyone.

www.visittucson.org/blog/post/gems-and-minerals/
www.tgms.org/show

The theme this year was Shades of Green- Experience the Magic. The theme for next year's show will be Red, White, and Blue Celebrate the Spirit of Minerals
xpopress.com/news/article/783/shades-of-green-70th-annual...

TGMS 2025
Tucson Gem Show 2025

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Taken in: United States / Arizona / Arizona Trailer Court (show map)

Taken on: February 16, 2025

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Sets appears in: • Tucson Gem & Mineral Show 2025

Groups appears in: • Tucson, Arizona • Minerals and rocks and fossils more » • Arizona Wonders (up to 3 in a row) • Rock/Mineral Image Database • Arizona Photographers Group • Mineral specimens • Minerais / Minerals • Earth Science Teaching Resource • Arizona Elite • Minerals, Rocks, and Gems • Rocks, gems, pebbles, & stones • Everything Arizona! (please join) • Rock, Mineral,Gems Hobbist • ARIZONA HOLIDAYS & SPECIAL EVENTS • Gems, Minerals on matrix, crystals and rough • All of Arizona Photography • Geotagged: Arizona « less

Camera: Sony ILCE-7M4, f/8.0, 1/160 sec, 70mm, ISO 1250 (more info) (hide info)

Camera:	Sony ILCE-7M4
Lens:	FE 24-70mm F2.8 GM II
Aperture:	f/8.0
Exposure Time:	0.006 sec (1/160)
Focal Length:	70mm
ISO:	1250
Exposure Bias:	0 EV
Flash:	Off, Did not fire
Exposure Program:	Manual
Exposure Mode:	Manual
Metering Mode:	Multi-segment
White Balance:	Auto
Sharpness:	Hard
Color Space:	sRGB
Software:	Adobe Photoshop Lightroom Classic 14.2 (Windows)
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