Twenty-sixth Annual Symposium sponsored by the Flagg Mineral Foundation.

Click on Image for detail info and the registration form.


Welcome to the Mineralogical Society of Arizona!

MSA, along with a Coalition of Rock & Gem Clubs, offer several fun and unique Field Trips throughout the year. We host many interesting Programs & Speakers and you are certain to meet new friends among our Rock and Mineral membership.

Refreshments are served at all MSA meetings and attendees have an exciting opportunity to win Great Mineral Raffle Prizes awarded to one Junior, one Adult, and one Visitor. Members who wear their MSA Name Badges to general meetings are also eligible for an additional raffle.

MSA participates in the annual Flagg Gem and Mineral Show in January, Arizona State Fair and Earth Science Day event in October. We look forward to Exploring, Sharing, and Inspiring your participation in our hobby.

Check out the NEWSLETTER for information on meetings, field trips, and other events of interest to Mineralogists and Rockhounds of all ages.

ALERT!!! Be sure to check out MSA website under MSA CLUB for meeting location and time details. Click here for a printable meeting schedule. Meetings are held the second Thursday of the month, except as noted in the meeting schedule at Franciscan Renewal Center, 5802 E. Lincoln Drive, Scottsdale‎ AZ‎ 85253.

New Meeting Format

Junior Members should arrive by 6:40 PM for Junior Education program starting at 6:45 PM.
All other Members can arrive at 7:00 PM with presentation starting at 7:30 PM.
Meetings are held the second Thursday of the month, except as noted in the meeting schedule.
Brief business meeting and raffle after the program, with Refreshments, Silent Auctions, and Buy/Sell/Trade Event.

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April 12, 2018 Program: “Lost Mines" Presented by Dr. Raymond W. Grant

Our April 12th program speaker is the great Dr. Ray Grant, President of Pinal Gem & Mineral Society and Curator of Pinal Geology & Mineral Museum located in Coolidge, Arizona.  Ray is on Mineralogical Society of Arizona Board of Governors as recent Past President. 

Everyone has heard about the Lost Dutchman Mine.  It is world famous.  Ray’s program will be about some other supposedly lost mines; for example, the Jenkins Mine, the Silver Antelope Mine, the Cap Linger Mine, the Frenchman’s Mine, the Ashley Mine and others.  These have been listed as lost mines in Maricopa and Pinal County. Some of them may have been found, but there are many other mines for which the exact location is not well known. There are thousands of listed mines or mining properties in these two counties.  A few are large famous mines, and some are only a small prospect pit.  Come and learn about lost and found mines in Maricopa and Pinal County. Somewhere out there may be a silver or gold lode just waiting for you to find it.



Dr. Raymond W. Grant, 2017 Mineralogical Society of Arizona
Art Poster Commemorating Ray’s 40 years collecting in Arizona,
40+ year MSA membership and 200th edition of Arizona Mineral Collector.


Ray is a 2014 MSA Hall of Famer, MSA Milestone Life Member, MSA President 1976-1977 and 2012-2013, Past Chairman of Flagg Mineral Foundation. He is author of the Checklist of Arizona Minerals, first edition (1982) and second edition (2007) and coauthor with Anthony, Williams, and Bideaux of the Mineralogy of Arizona, third edition (1995).  He received his Geology from Harvard University (1968) and was Professor of Geology at Mesa Community College 1975-2001 and part time 2001-2006.






Mineral of the Month ETTRINGITE
By Dr. Raymond Grant

Mineral of the Month for April is ettringite, calcium aluminum sulfate hydroxide hydrate, Ca6Al2(SO4)3(OH)12.26H2O. It is typically formed by the alteration of contact-metamorphosed limestones containing calcium and aluminum silicates.  It is colorless, white, pale yellow-yellow.  It forms prismatic crystals and is often fibrous to cottonlike.  The hardness is 2 to 2.5 and it partially dehydrates on exposure to air losing some of the 26 waters.

There is one locality listed for Arizona; it is the Lucky Cuss Mine at Tombstone in Cochise County, where it is said to have formed as an alteration product of silicates.  It is described by B. S. Butler in 1938.  If you go to the Butler reference an interesting story comes out.  The original description of this ettringite comes from a study by A. J. Moses in 1893.  Butler also has this statement “Bannester has recently stated that a specimen of so called ettringite from Tombstone, Arizona, in the mineral collection of the British Museum was identified by x-ray and optical methods as halotrichite.”  Halotrichite is a similar sulfate and looks identical to ettringite.  So, does it occur in Arizona?  There is a specimen in the Harvard collection cited as ettringite, so it could be checked (H 68800).

Members are invited to bring one sample from their collection of the mineral of the month and give a brief story about where they collected it or something about the specimen.

***Unknown minerals for identification can still be brought to the meetings***

ETTRINGITE, Ca6Al2(SO4)3(OH)12 · 26H2O, 2.7cm, 
N'Chwaning II Mine; Kalahari Manganese Field, N. Cape,
South Africa; Alex Schauss Collection, © Jeff Scovil.







Visiting Mineralogists & Rockhounds, please get in touch with us!

Trade Minerals
Members please feel free to bring minerals for trade to next MSA meeting.

The Rules of Etiquette
From Rockhound Record 1942

At the risk of seeming impertinent, exhibitors of minerals will provide good insurance to specimens if they will display, in a prominent place on their exhibit, the rules of etiquette:

1. Never pick up a piece of material unless it is handed to you by the owner.

2. Always handle carefully – as many specimens are valuable and cannot be replaced.

3. If you cannot see the specimen well, ask the owner to show it to you.

Membership Dues are Due!

Please pay at the next meeting or mail to Mineralogical Society of Arizona, 5533 E. Bell Road Suite 101, Scottsdale, AZ 85254.
Membership form & dues amounts are on website under MSA CLUB tab.

arizona, minerals, rock collecting clubs

New MSA Commemorative Pin

Designed by Chris Whitney-Smith, one of our members, in commemoration of MSA's 75th Anniversary in 2010. 

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Mineralogical Society of Arizona
5533 E. Bell Road
Suite 101
Scottsdale, AZ 85254

Member of the Rocky Mountain Federation of Mineralogical Societies
Member of the American Federation of Mineralogical Societies

Last Modified March 3,, 2018 by Ron Ginn


Mineral logo photo courtesy of Jeff Scovil.

website by Rock Dog

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