Helping San Diego, California and beyond since 1997.
Do you need
volunteer, community service, work, military or court hours?
|
|
Helping San Diego, California and beyond since 1997.
|
|
Click here and add this page to your favorites!
|
Encyclopedia Britannica - Main :: APO-ARN |
|
|
ARGYRODITE , a mineral
interest
element
germanium
system
octahedron
dodecahedron , and are frequently twinned. The botryoidal crusts of small indistinct crystals first found in a silver mine at Freiberg in Saxony were originally thought to be monoclinic, but were afterwards proved to be identical with the more distinctly developed crystals recently found in Bolivia. The colour is iron-black with a purplish tinge, and the lustre metallic: There is no cleavage; hardness 21, specific gravity 6.2. It is of interest
note that the Freiberg mineral
long ago imperfectly described by A. Breithaupt under the name Plusinglanz, and that the Bolivian crystals were incorrectly described in 1849 as crystallized brongniardite. The name argyrodite is from the Greek apyupWhrls, rich
Isomorphous with argyrodite is the corresponding tin compound AgsSnS6, also found in Bolivia as cubic crystals, and known by the name canfieldite. Other Bolivian crystals are intermediate in composition between argyrodite and canfieldite. (L. J. S.) End of Article: ARGYRODITE If you wish, you can link directly to this article.
<a href="http://jcsm.org/StudyCenter/Encyclopedia/APO_ARN/ARGYRODITE.html"> ARGYRODITE </a> |
|
|
(Previous) ARGYLLSHIRE |
(Next) ARGYROKASTRO, or ARGYROCASTRON (Turkish, Ergeri... |
|
Sponsored Advertisements