Cornuite (of Rogers)
A variety of Chrysocolla
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Felix Cornu
Formula:
Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Colour:
Green, bluish green
Lustre:
Sub-Vitreous, Resinous, Waxy
Name:
Named in 1917 by Austin F. Rogers in honor of Felix Cornu [December 26, 1882 Prague, Czech Republic - September 23, 1909 Leoben, Austria] assistant professor of mineralogy, petrography and geology of mineral deposits at Montanische Hochschule University, Leoben, Austria. Cornu is recognized as a founder of colloid chemistry and the mineral name was chosen in appreciation of his being one of the first mineralogists to make a clear distinction between crystalline and amorphous mineral species. Cornuite is an amorphous equivalent of chrysocolla. Cornu named the mineral species hibschite. Cornu's research on the hydration state of zeolites from the České středohoří Mountains resulted in the Reuss–Cornu Rule which correlates the hydration states of zeolites with descreasing temperature of crystallization.
Described as "Amorphous equivalent of chrysocolla."
Unique Identifiers
Mindat ID:
9312 (as Cornuite (of Rogers))
1040 (as Chrysocolla)
1040 (as Chrysocolla)
Long-form identifier:
mindat:1:1:9312:1 (as Cornuite (of Rogers))
mindat:1:1:1040:1 (as Chrysocolla)
mindat:1:1:1040:1 (as Chrysocolla)
Similar Names
| Corneite | A synonym of 'Biotite hornfels' | |
| Cornite | A synonym of 'Petrosilex' | |
| Cornubite | A valid IMA mineral species | Cu5(AsO4)2(OH)4 |
| Coronite | A rock subtype | |
| Coronite (of Hunt) | A synonym of Dravite | |
| Corynite | A synonym of 'Antimony-bearing Gersdorffite' | |
| Kernite | A valid IMA mineral species - grandfathered | Na2[B4O6(OH)2] · 3H2O |
| Kornite | A synonym of Potassic-mangani-leakeite | |
| Kornite (of Frenzel) | A rock subtype | |
| Černýite | A valid IMA mineral species | Cu2CdSnS4 |
Physical Properties of Cornuite (of Rogers)
Optical Data of Cornuite (of Rogers)
Type:
Isotropic
RI values:
n = 1.529 - 1.545
Birefringence:
0.00
Surface Relief:
Low
Chemistry of Cornuite (of Rogers)
Mindat Formula:
Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Fluorescence of Cornuite (of Rogers)
Not fluorescent in UV
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Cornuite (of Rogers)
mindat.org URL:
https://www.mindat.org/min-9312.html
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