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Chessy and chessylite, an old name of azurite
  
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Roger Warin




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PostPosted: Sep 08, 2013 15:54    Post subject: Chessy and chessylite, an old name of azurite  

Hi List,
Chessy-les-Mines (Rhone), is a classic locality of azurite in France. It is very famous because it was described by former great crystallographers like Alfred Lacroix, Giuseppe Cesàro, Albrecht Schrauf...
Here is a less conventional crystal habit than what one usually sees in this site.
Spherical subparallel aggregates are common. Chessylite (azurite) can be characterized by numerous secondary forms.
The process of metamorphosis in malachite is underway. It is initiated from the matrix and it remains a nice little thickness of azurite.
There is also cuprite and pretty pseudomorphs of malachite after cuprite. This pic shows such a pseudomorph with also a growth of two crystals with parallel axes.
Roger.



Azurite_Chessy_R.jpg
 Description:
Azurite
Chessy, Rhône, France
8 cm high
with pseudomorphose in malachite
 Viewed:  8245 Time(s)

Azurite_Chessy_R.jpg



Azurite_Chessy_2_R.jpg
 Description:
Azurite
Chessy, Rhône, France
3 cm diam.
globular aggregate
 Viewed:  8243 Time(s)

Azurite_Chessy_2_R.jpg



Malchite-psm-cuprite_R.jpg
 Description:
Malachite psm after cuprite
Chessy, Rhône, France
16 mm
2 crystals with parallel axes
 Viewed:  8283 Time(s)

Malchite-psm-cuprite_R.jpg


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