Note on Pickeringite from Missouri, (in a letter to one of the editors, from G. C. Broadhead, State Geologist of Missouri, dated St. Louis, Mo., March 3, 1874.) - The Pickeringite occurs in efflorescences on sandstone of the Lower Coal-measures in Barton County, Mo. An analysis by the chemist of the Geological Survey, Mr. R. Chauvenet, gives the following for its composition: Sulphuric acid 33.77, alumina 16.58, magnesia 2.92, water 44.64 = 99.91. This nearly corresponds with the composition given for “Pickeringite” on page 653 of Dana’s Mineralogy.

American Journal of Science and Arts.

Editors and Proprietors,
Professors James D. Dana and B. Silliman.

Associate Editors,
Professors Asa Gray and Wolcott Gibbs, Of Cambridge,
Professors H. A. Newton, S. W. Johnson, Geo. J. Brush and A. E. Verrill, Of New Haven,
Professor Edward C. Pickering, of Boston.

Third Series. VOL. VII. - [WHOLE NUMBER; CVII.]
Nos. 37 - 42. JANUARY TO JUNE, 1874.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

ⓘ Pickeringite

1 valid mineral.

Detailed Mineral List:

ⓘ Pickeringite

Formula: MgAl₂(SO₄)₄ · 22H₂O

References:

Dana 6: 1083.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘ	Pickeringite	7.CB.85	MgAl₂(SO₄)₄ · 22H₂O

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Pickeringite	MgAl₂(SO₄)₄ · 22H₂O
O	Oxygen
O	ⓘ Pickeringite	MgAl₂(SO₄)₄ · 22H₂O
Mg	Magnesium
Mg	ⓘ Pickeringite	MgAl₂(SO₄)₄ · 22H₂O
Al	Aluminium
Al	ⓘ Pickeringite	MgAl₂(SO₄)₄ · 22H₂O
S	Sulfur
S	ⓘ Pickeringite	MgAl₂(SO₄)₄ · 22H₂O

Other Regions, Features and Areas containing this locality

North AmericaContinent

North America PlateTectonic Plate

Mazatzal DomainDomain
Mazatzal TerraneVolcanic Arc

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

books.google.com (n.d.) https://books.google.com/books?id=Te9BAQAAMAAJ

Dana, Edward Salisbury; Dana, James Dwight (1892) A System of Mineralogy (6th ed.). John Wiley & Sons, Inc.

Sherwood, Mark D., Williams, Glenn A. (1998) Missouri Mineral Locality Index. Rocks & Minerals, 73 (2) 98-117 doi:10.1080/00357529809603046

Quick NavTop Mineral List Other Regions References

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 22, 2026 02:10:49 Page updated: August 24, 2025 04:52:30

Go to top of page

McCarrow's Mine, Barton County, Missouri, USAiRegional Level TypesMcCarrow's MineMine Barton CountyCounty MissouriState USACountry function showexplain() { $("#locexplain").toggle(); if (typeof movemap === "function") movemap(); }