Preface
It's
June, and time to begin our annual Summer Picfest with Elbaite.
Many colorful tourmalines have almost made the grade for this, our first Picfest of
Summer 2007. Though the blues of Indicolite were pleasing, they were too dark for
bright season's first picfest. Achroite is colorless. And, Verdelite is green.
Though,
I fancied the myriad crystal associations that mostly green with some red Elbaite
offered. We might save red Rubellite for another day.
So, get ready for some mineral eye candy with this month's favorite: Elbaite! Let's
go!
Introduction
Welcome to
another annual Mineral
Picfest!
Elbaite is our
gemmy mineral of choice this month. It has history and gem appeal.
Please have fun browsing our virtual Elbaite museum this month, and visit a link or two.
Enjoy!
Named after the French island of Elba where
it was first found, Elbaite follows a rich heritage
of discovery and history.
Many know Elba as the place to which
Napoleon was exiled in 1814. Nearly a hundred years
later in 1913, Elbaite was discovered. Bearing a rich tradition of Etruscan iron
mining and forging,
politics, winemaking, and now Elbaite vugs, this little corner of the Earth has given much
to our
mineral knowledge.
To learn more of Elba's geology, visit Isola d'Elba Geologia (link is for the
English version).
Elbaite forms in three different series, the: Elbaite-Dravite Series, Elbaite- Series, and
Elbaite-Schorl Series. All of these are part of the Tourmaline Group.
It's chemistry is a little complex, having chemical formula: Na(Li,Al)3Al6(BO3)3Si6O18(OH)4.
Note that Tourmaline is Lithium-rich; whereas, Beryl is Beryllium-rich. It is rare
for the two
different minerals to co-exist in the same pegmatite. So, Elbaite occurs less
frequently than
beryls in certain large-grained pegs.
There are about 307 known localities worldwide, according to the mindat.org database.
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Elbaite
with Quartz
Santa Rosa Mine, Minas Gerais, Brazil |
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Elbaite
with Albite on Quartz
Stak Nala, Gilgit, Pakistan |
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Elbaite
with Quartz and Lepidolite
Chia Mine, Minas Gerais, Brazil |
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Elbaite
with Lepidolite and Albite
Cruzeiro Mine, Minas Gerais, Brazil |
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Elbaite
Cruzeiro Mine, Minas Gerais, Brazil |
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Elbaite
(var. Indicolite) on Lepidolite
Minas Gerais, Brazil |
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Elbaite
Laghman, Kunar Province, Aghanistan
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Elbaite
Cruzeiro Mine, Minas Gerais, Brazil |
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Elbaite
with Lepidolite and Cookeite
Chia Mine, Minas Gerais, Brazil |
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Elbaite
with Quartz
Barra do Salinas, Minas Gerais, Brazil |
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Elbaite
on Quartz
Chia Mine, Minas Gerais, Brazil |
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Elbaite
Cruzeiro Mine, Minas Gerais, Brazil |
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Elbaite
Jos, Nigeria |
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Elbaite
Minas Gerais, Brazil |
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Elbaite
on Quartz
Chia Mine, Minas Gerais, Brazil |
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Elbaite
with Topaz (Nasser Collection)
Shigar Valley, Gilgit, Pakistan |
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Elbaite
Paprok, Nuristan, Afghanistan |
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Elbaite
(ex Nelson Collection)
Himalaya Mine, Mesa Grande, California |
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Elbaite
Scepter (ex Nelson Collection)
Pederneira Mine, Minas Gerais, Brazil |
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Elbaite
with Quartz (ex Nelson Collection)
Golconda Mine, Minas Gerais, Brazil |
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Elbaite
(ex Nelson Collection)
Himalaya Mine, Mesa Grande, California |
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Elbaite
(ex Nelson Collection)
Gillette Quarry, Haddam Neck, Connecticut |
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Elbaite
with Herderite (ex Nelson Collection)
Pederneira Mine, Minas Gerais, Brazil
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Elbaite
on Quartz
Cruzeiro Mine, Minas Gerais, Brazil |
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Elbaite
(ex Nelson Collection)
Pederneira Mine, Minas Gerais, Brazil |
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Elbaite
on Quartz (ex Nelson Collection)
Mawi, Laghman, Nuristan, Afghanistan |
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Elbaite
(ex Nelson Collection)
Paprok, Nuristan, Afghanistan |
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Childrenite
on Elbaite, (ex Nelson Collection)
Paroon Valley, Kunar, Afghanistan |
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Elbaite
with Albite and Lepidolite
Pederneira Mine, Minas Gerais, Brazil |
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Elbaite
(ex Nelson Collection)
Cruzeiro Mine, Minas Gerais, Brazil |
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Green
Fluorite with Elbaite on Albite (View 1)
(ex Nelson Collection and Obodda Collection)
Stak Nala, Skardu, Gilgit, Pakistan |
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Green
Fluorite with Elbaite on Albite (View 2)
(ex Nelson Collection and Obodda Collection)
Stak Nala, Skardu, Gilgit, Pakistan |
| Photos by and courtesy of Isaias Casanova ©2007, IC Minerals |
Uses
Tourmaline has had two
major uses: as a peizoelectric plate in instrumentation and as
a supreme gemstone. Some of the gemmiest Elbaite comes from Maine, Brazil,
Afghanistan,
Pakistan, and Nigeria.
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Links
http://en.wikipedia.org/wiki/Elbaite
http://www.webmineral.com/data/Elbaite.shtml
Members' Gallery
Here is where DMS Members can add their Elbaite
photos to share with us.
Until Next Time
We hope you have enjoyed our all too short visit to
Elbaite. Please join us next month,
for another article, and we shall journey together!
Until then, stay safe, and happy collecting. 
Article Contributors
I would like to gratefully acknowledge the generous contributions of our fellow Elbaite
enthusiasts,
collectors, authors, curators, professionals, and club members who made this
work possible. Thanks.
© 2007 All contributions
to this article are covered under the copyright protection of this article
and by separate and several copyright protection(s), and are to be used for the sole
purposes of
enjoying this scholarly article. They are used gratefully with express written
permission of the
authors, save for generally-accepted scholarly quotes, short in nature, deemed legal to
reference
with the appropriate citation and credit. Reproduction of this article must be
obtained by express
written permission of the author, Kenneth B. Casey, for his contributions, authoring,
photos, and
graphics. Use of all other credited materials requires permission of each
contributor separately.
Links and general contact information are included in the credits above, and throughout
this article.
The advice offered herein are only suggestions; it is the reader's charge to use the
information
contained herein responsibly. DMS is not responsible for misuse or accidents caused
from this
article. All opinions, theories, proofs, and views expressed within this article, and in
others on this
website, do not necessarily reflect the views of the Delaware Mineralogical Society.
Suggested Reading
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About
the Author: Ken is current webmaster of the Delaware
Mineralogical Society. He has a diploma in
Jewelry Repair, Fabrication & Stonesetting from the Bowman Technical School,
Lancaster, PA, and worked as jeweler. He has
also studied geology at the University of Delaware. And,
he is currently a member of the Delaware Mineralogical Society and the Franklin-Ogdensburg
Mineralogical Society. E-mail: kencasey98@yahoo.com.
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