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.

Contact us via Email: MSAClub1935@msaaz.org


June 14, 2018 Program: "Mysteries of Mineral Kingdom Revealed: Micromount Minerals of 79 Mine" Presented by Mr. Ron Gibbs

Our June 14th program will be presented by the great Mr. Ron Gibbs on "Mysteries of Mineral Kingdom Revealed: Micromount Minerals of 79 Mine."  Ron’s program will address history of 79 Mine and then go through the various mineral groups found in the mine illustrated with photos of microminerals showing the diversity of habit and form not usually seen by the collector.  This will be great opportunity to peer into rich mineral diversity of a legendary Arizona mine from a well-respected mineral research professional, author and lecturer.

Ron has been interested in rockhounding since high school and began focusing on minerals in college. He enjoys collecting all sizes of specimens including microminerals.  Ron has degrees from Humboldt State College and Mackay School of Mines (University of Nevada Reno).  He retired after 37 years working for Phelps Dodge, now Freeport McMoRan.



RON GIBBS with Lucky Rabbit


Ron has published articles for The Mineralogical Record, Rocks and Minerals, and Mineralien Weld magazines, and has given talks at various symposiums including ones in New Mexico, Arizona, and Maryland.  He chairs Micromineral Symposium/Room at annual Tucson Gem & Mineral Show® and helps coordinate Micromineral meeting at annual Minerals of Arizona Symposium hosted by Flagg Mineral Foundation.  He volunteers at University of Arizona Geosciences Department as Research Associate and works in University of Arizona Gem and Mineral Museum.  Ron stumbled onto of a few new mineral discoveries, has a mineral named in his honor “Rongibbsite” and is currently collaborating with Dr. Raymond Grant on next edition of Minerology of Arizona




Mineral of the Month BOLEITE
Dr. Raymond Grant

Mineral of the Month for June is Boleite, potassium lead copper silver chloride hydroxide, KPb26Ag9Cu24(OH)48Cl62.  It is cubic, color is dark blue, and the hardness is 3 – 3.5.  The best way to identify it is from the crystal system as there are few blue cubic minerals, so look for blue cubes.  Unfortunately, all the specimens from Arizona are micromounts with crystals from a fraction of a millimeter to a couple of millimeters in size.

It is a relatively rare mineral, found in the oxidized zones of lead - copper deposits, and found at a few localities in Arizona. The best Arizona specimens are from the Mammoth-St. Anthony Mine in Pinal County.  Other Arizona localities include the Apache Mine, Gila County, Rowley Mine, Maricopa County, and Vekol Mine, Pinal County.  The best specimens are from the type locality at Boleo, Mexico where crystals up to almost an inch have been found.

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***


BOLEITE KPb26Ag9Cu24(OH)48Cl62, PSUEDOBOLEITE Pb31Cu24Cl62(OH)48,
CUMMENGITE Pb21Cu20Cl42(OH)40 · 6H2O, to 1.1cm, Amelia Mine,
Boleo District, Santa Rosalia, Baja California Sur, Mexico;
Spirifer Collection, © Jeff Scovil



BOLEITE KPb26Ag9Cu24(OH)48Cl62, to 3mm, Amelia Mine, Boleo District,
Santa Rosalia, Baja California Sur, Mexico; Luchiano Fabeni Collection,
© Bruno Marello.





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 May 30, 2017 by Ron Ginn


Mineral logo photo courtesy of Jeff Scovil.

website by Rock Dog

©2008-2017 Mineralogical Society of Arizona