Log InRegister
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreOur ScienceMindat Newsletter [Free Download]Contact Us
Donate to MindatSponsor a PageCorporate SponsorshipSponsored Pages
Learning CenterWhat Is a Mineral?The Most Common Minerals on EarthInformation for EducatorsMindat ArticlesMindat Newsletter [Free Download]The ElementsThe Mineral Quiz
Minerals by PropertiesMinerals by ChemistryMineral Visual ExplorerAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDMinerals by CountryAlphabetical Mineral IndexAlphabetical Locality SearchMineral Association SearchList of CountriesLocalities Near MePhoto SearchSearch ArticlesSearch GlossaryThe Rock H. Currier Digital LibraryMore Search Options
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
MineralsPetrologyFossilsMeteoritesGeologic Time
Mining CompaniesStatisticsMineral MuseumsClubs & OrganizationsMineral Shows & EventsDevice SettingsTime Machine
Read DiscussionsIdentification Request
Photo SearchPhoto GalleriesSearch by ColourPhoto Colour ExplorerNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Cornuite (of Rogers)

A variety of Chrysocolla
This page is currently not sponsored. Click here to sponsor this page.
09350840017271929294215.jpg
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."


Hide all sections | Show all sections

Unique IdentifiersHide

Mindat ID:
9312 (as Cornuite (of Rogers))
1040 (as Chrysocolla)
Long-form identifier:
mindat:1:1:9312:1 (as Cornuite (of Rogers))
mindat:1:1:1040:1 (as Chrysocolla)

Similar NamesHide

CorneiteA synonym of 'Biotite hornfels'
CorniteA synonym of 'Petrosilex'
CornubiteA valid IMA mineral speciesCu5(AsO4)2(OH)4
CoroniteA rock subtype
Coronite (of Hunt)A synonym of Dravite
CoryniteA synonym of 'Antimony-bearing Gersdorffite'
KerniteA valid IMA mineral species - grandfatheredNa2[B4O6(OH)2] · 3H2O
KorniteA synonym of Potassic-mangani-leakeite
Kornite (of Frenzel)A rock subtype
ČernýiteA valid IMA mineral speciesCu2CdSnS4

Physical Properties of Cornuite (of Rogers)Hide

Lustre:
Sub-Vitreous, Resinous, Waxy
Transparency:
Transparent, Translucent
Colour:
Green, bluish green

Optical Data of Cornuite (of Rogers)Hide

Type:
Isotropic
RI values:
n = 1.529 - 1.545
Birefringence:
0.00
Surface Relief:
Low

Chemistry of Cornuite (of Rogers)Hide

Mindat Formula:
Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Elements listed:
Al, Cu, H, O, Si - search for minerals with similar chemistry

Fluorescence of Cornuite (of Rogers)Hide

In UV light:
Not fluorescent in UV

Other InformationHide

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)Hide

References for Cornuite (of Rogers)Hide

Quick NavTopUnique IdentifiersSimilar NamesPhysical Properties Optical Data Chemistry Fluorescence Other InformationInternet Links References
 
and/or  
Mindat.org® is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Mindat® and mindat.org® are registered trademarks of the Hudson Institute of Mineralogy.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2026, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph and Ida Chau.
Content on this site may not be used to train, fine-tune, or otherwise develop artificial intelligence or machine learning models without prior written permission - see our Terms & Conditions.
To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: October 14, 2026 02:29:13 Page updated: May 15, 2026 22:50:26
Go to top of page