The 990th meeting of 

The Mineralogical Society


Southern California


June Meeting

ZOOM presentation

Opal of Canada, and the Americas

 Presented by Pete Goetz

Friday, June 11, 2021 at  7:30.

See program notes below

Visitors are always welcome

About us…

The Mineralogical Society of Southern California is dedicated to the dissemination of a general knowledge of the mineralogical and related earth sciences through the study and collecting of mineral specimens. Organized in 1931, it is the oldest mineralogical society in the western United States.
The MSSC is a scientific non-profit organization that actively supports the Pasadena City College Geology Department,   Field Science Scholarship Fund.  Support is also given to Mindat.
The MSSC is affiliated with the California Federation of Mineralogical Societies and American Federation of Mineralogical Societies.

For more information

Program Notes: 


Effective April, 21, 2021

Paid MSSC members will be automatically on the invite list each month.

For Non Members:

You must request to attend the MSSC zoom meeting every month.

See Meeting page for details.

Yes, the General Meetings at our normal PCC meeting location have been cancelled. BUT! There will be an internet meeting via ZOOM. Our President, George Rossman is offering a MSSC meeting via ZOOM as follows: He uses Caltech’s ZOOM license which allows meetings to last as long as the need [Caltech has given him permission to do this]. To sign up for the meeting see instructions in the current month’s bulletin.

Join us: Friday, June 11, 2021 at 7:30. Opal of Canada, and the Americas.

Presenter: Pete Goetz, past President,American Opal Society

 This will be a down and dirty presentation on non-Australian Opal. Geologic settings, mining, and characteristics.  Goetz has been president of the American Opal Society for over ten years. He graduated from San Diego State University after studying structural geomorphology or the processes and interactions that form landscapes. After a career in retail, he returned to his earth science passion and taught physical science, earth science and astronomy in the Anaheim School District for 22 years.

In his early years he actively collected rock and mineral samples, then focused his study on opals, turquoise and pearls. He enjoys researching, writing and speaking about opals as a way of sharing his knowledge and enthusiasm about the gem. Goetz will bring samples of opals from different sources including Australia and Peru

***Participants who want to do this must respond to our Programs chair, Rudy Lopez at  no later than Tuesday June 8, 2021.  Please include “June ZOOM Meeting” in the subject line of your response. This response date will allow time for us to send you the information needed to participate in the ZOOM meeting and also will allow time to get everything organized at Caltech. 


Upcoming Events

  • July 9, 2021: Eric Scerri: the Periodic Table: It’s Story & It’s Significance via ZOOM
  • August 13, 2021: Krista Sawchuk: Discovering the Deep Earth via ZOOM

  • September 10, 2021: Alan Rubin: The Origin of Chondrules via ZOOM

  • October 8, 2021: Dr. Sarah Milkovich – MARS

Important news about the MSSC Roster

The MSSC is pleased to offer the new 2020 edition of Bob Pedersen’s X- Dana 

X-Dana Mineral Spreadsheet