Aeschynite

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Aeschynite-(Y)
Slobrekka Pegmatite, Frikstad, Iveland, Aust-Agder, Norway

Name:	From the Greek αισχύνη ("aeschyne") for "shame", alluding to the fact that early chemists had difficulty with separations of titanium from zirconium in some samples.
Synonym of:	Aeschynite-(Ce), Aeschynite-(Nd), Aeschynite-(Y), Nioboaeschynite-(Ce), Nioboaeschynite-(Y), Tantalaeschynite-(Y)

A group of rare-earth, titanium, rarely niobium and tantalum oxide-hydroxide minerals. Localities listed are for undifferentiated members of the group.
The most commmon members are Aeschynite-(Ce) and Aeschynite-(Y).

Classification of Aeschynite

mindat.org URL:

http://www.mindat.org/min-40.html
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Crystallography of Aeschynite

Crystal Atlas:

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Aeschynite no.2 - Goldschmidt (1913-1926)

Aeschynite no.7 - Goldschmidt (1913-1926)

Aeschynite no.14 - Goldschmidt (1913-1926)

About Crystal Atlas

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The mindat.org Crystal Atlas allows you to view a selection of crystal drawings of real and idealised crystal forms for this mineral and, in certain cases, 3d rotating crystal objects. You need Java to see these. You can download Java for free - click here to download Java

The 3d models and java code are kindly provided by www.smorf.nl. You can control the movement of the models by holding down the left mouse-button over the 3d model and moving your mouse. Keyboard controls are:

: default positions

t/T	: decrease/increase transparency	x/X	: next/previous texture
b/B	: next/previous background	w	: toggle wireframe
s	: toggle sticks	m	: toggle miller indices
k	: toggle crystallographic axes	=/-	: zoom in/out
r	: stop/start rotation	1/2/3

Other Names for Aeschynite

Synonyms:

Other Languages:

German:	Aeschynit Äschynit Dystomes Melanerz Eschinit Eschynit
Simplified Chinese:	易解石
Spanish:	Aechynita Aeschynita Aschynita Eschinita Eschynita

Varieties:

Alumo-aeschynite

Other Information

Health Warning:

No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Aeschynite

Reference List:

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Berzelius (1828), Jahresber. Chem. Min.: 9: 195.

Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged: 793-797.

Zhuming Yang, Rengui Song, Kejie Tao, and Peishan Zhang (2003): Rare earth compositional variation of aeschynite group minerals. Journal of the Chinese Rare Earth Society 21(6), 716-720.