Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
Log InRegister
Quick Links : The Mindat ManualThe Rock H. Currier Digital LibraryMindat Newsletter [Free Download]
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsThe Rock H. Currier Digital LibraryGeologic TimeExplore Fossils
Minerals by PropertiesMinerals by ChemistryMineral Visual ExplorerAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsClubs & OrganizationsMineral Shows & EventsThe Mindat DirectoryDevice SettingsThe Mineral QuizTime Machine
Photo SearchPhoto GalleriesSearch by ColorPhoto Colour ExplorerNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Illite from
Willcox Playa, Willcox, Cochise County, Arizona, USA


Locality type:Saline Lake
Classification
Species:Muscovite var: Illite
Formula:K0.65Al2.0[Al0.65Si3.35O10](OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Illite data
Locality Data:Click here to view Willcox Playa, Willcox, Cochise County, Arizona, USA
Data Identifiers
Mindat Occurrence Record ID:196457
Long-form Identifier:1:3:196457:8
GUID (UUID V4):0
Nearest other occurrences of Illite
33.2km (20.6 miles) ⓘFesterling Mine (Elsicor Mine; Cora Mine), Black Diamond Peak, Middle Pass Mining District, Cochise County, Arizona, USA
55.4km (34.4 miles) ⓘKartchner Caverns, Cochise County, Arizona, USA
61.3km (38.1 miles) ⓘGallagher Vanadium & Rare Minerals Corp Mine, Tombstone Mining District, Cochise County, Arizona, USA
66.3km (41.2 miles) ⓘCross Hill Quarry (Pantano Clay deposit; Mineral Lease No. 23880C), Pantano Wash, Rincon Valley, Pima County, Arizona, USA
80.1km (49.8 miles) ⓘSacramento Hill, Bisbee, Cochise County, Arizona, USA
89.6km (55.7 miles) ⓘGrand Reef Mine, Laurel Canyon, Grand Reef Mountain, Klondyke, Aravaipa Mining District, Graham County, Arizona, USA
91.9km (57.1 miles) ⓘKalamazoo orebody, San Manuel Mine, Pinal County, Arizona, USA
References
Pipkin, B.W. (1967), Mineralogy of the 140-ffot core from Willcox Playa, Cochise Co., AZ (abs.), Amer. Assn. Petroleum Geologist Bull., 51:478.
Anthony, John W.; Williams, Sidney A.; Bideaux, Richard A.; Grant, Raymond W. (1995) Mineralogy of Arizona (3rd ed.). University of Arizona Press.p.304
 
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: September 3, 2026 06:47:56
Go to top of page