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Adularia
A variety of K Feldspar
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About Adularia
Formula:
KAlSi3O8
Crystal System:
Monoclinic
Name:
Named in 1780 by Ermenegildo Pini for the type locality, the Adula Massif (part of the Gotthard massif), Switzerland.
A more ordered low-temperature variety of Orthoclase or partially disordered Microcline. Individual localities should be verified because the adularia structural state is nearly equally represented by microcline and orthoclase specimens. Generally found in alpine-type parageneses.
Originally described from the Adula Massif, Ticino (Tessin), Switzerland.
See also Paradoxite, a flesh coloured orthoclase of the adularia style.
Visit gemdat.org for gemological information about Adularia.
Originally described from the Adula Massif, Ticino (Tessin), Switzerland.
See also Paradoxite, a flesh coloured orthoclase of the adularia style.
Visit gemdat.org for gemological information about Adularia.Unique Identifiers
Mindat ID:
28 (as Adularia)
9581 (as K Feldspar)
9581 (as K Feldspar)
Long-form identifier:
mindat:1:1:28:0 (as Adularia)
mindat:1:1:9581:1 (as K Feldspar)
mindat:1:1:9581:1 (as K Feldspar)
Vordere Chollergrabe, Lärchultini, Binn, Goms, Valais, Switzerland