Vote for your favorite mineral in #MinCup26! - Cuprite vs. Halite
While externally similar shapes, these two minerals are very different inside.
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

Fayalite from
Obsidian Cliffs, North Sister Mountain, McKenzie Pass, Lane County, Oregon, USA


00231460017363254263300.jpg
Fayalite, etc.

Obsidian Cliffs, North Sister Mountain, McKenzie Pass, Lane County, Oregon, USA
04135690017272015085156.jpg
Fayalite, etc.

Obsidian Cliffs, North Sister Mountain, McKenzie Pass, Lane County, Oregon, USA
03311090017272015104843.jpg
Fayalite, etc.

Obsidian Cliffs, North Sister Mountain, McKenzie Pass, Lane County, Oregon, USA
00238980017272015128569.jpg
Fayalite, etc.

Obsidian Cliffs, North Sister Mountain, McKenzie Pass, Lane County, Oregon, USA
00231460017363254263300.jpg
Fayalite, etc.

Obsidian Cliffs, North Sister Mountain, McKenzie Pass, Lane County, Oregon, USA
03632370017363254265985.jpg
Fayalite, etc.

Obsidian Cliffs, North Sister Mountain, McKenzie Pass, Lane County, Oregon, USA
04895840017363254264779.jpg
Fayalite, etc.

Obsidian Cliffs, North Sister Mountain, McKenzie Pass, Lane County, Oregon, USA
07640540017363254262192.jpg
Fayalite, etc.

Obsidian Cliffs, North Sister Mountain, McKenzie Pass, Lane County, Oregon, USA
04510690017362151915350.jpg
Fayalite, etc.

Obsidian Cliffs, North Sister Mountain, McKenzie Pass, Lane County, Oregon, USA
04135690017272015085156.jpg
Fayalite, etc.

Obsidian Cliffs, North Sister Mountain, McKenzie Pass, Lane County, Oregon, USA
03311090017272015104843.jpg
Fayalite, etc.

Obsidian Cliffs, North Sister Mountain, McKenzie Pass, Lane County, Oregon, USA
00238980017272015128569.jpg
Fayalite, etc.

Obsidian Cliffs, North Sister Mountain, McKenzie Pass, Lane County, Oregon, USA
Locality type:Cliff
Classification
Species:Fayalite
Formula:Fe22+(SiO4)
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Hematite5
Laihunite4
Tridymite1
Osumilite1
Data
Mineral Data:Click here to view Fayalite data
Locality Data:Click here to view Obsidian Cliffs, North Sister Mountain, McKenzie Pass, Lane County, Oregon, USA
Photo GalleryView Gallery (7 photos)
Data Identifiers
Mindat Occurrence Record ID:100462
Long-form Identifier:1:3:100462:5
GUID (UUID V4):0
References
Olsen, Edward, Bunch, T. E. (1970) Compositions of natural osumilites. American Mineralogist, 55 (5-6) 875-879
Martin, A.M.,Médard, M.,Devouard, B., Keller, L. P., Righter, K., Devidal, J-L., and Rahman, Z. (2015): Fayalite oxidation processes in Obsidian Cliffs rhyolite flow, Oregon. American Mineralogist: 100: 1153–1164.
 
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 29, 2026 03:41:11
Go to top of page