Bulletin of the Mineralogical Society of Southern California
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Bulletin of the Mineralogical Society of Southern California Volume 86 Number 6 June, 2013 The 898th meeting of the Mineralogical Society of Southern California th June 14 , 2013 at 7:30 pm Pasadena City College Geology Department, E-Building, Room 220 1570 E Colorado Blvd., Pasadena Program: "Getting to know Cubic Crystals" or "An Introduction to the Isometric Crystal System" In this Issue: Title Page Program: "Getting to know Cubic Crystals" or "An Introduction to the Isometric Crystal System" by Fred & Linda Elsnau 2 From the Editor: Linda Elsnau 2 Meanderings from the President: Ann Meister 2 von Karman Lecture Information 3 Minutes of the May, 2013 Meeting 3 Ride Share Listing 4 Kay’s Mineral Adventures: by Kay Robertson 4 Gems Of The Medici at the Bowers Museum 7 June Featured Mineral: 8 Did You Know? by Linda Elsnau 8 Calendar of Events 10 2013 Officers 11 About MSSC 11 Remember: If you change your email or street address, you must let the MSSC Editor and Treasurer know or we cannot guarantee receipt of future Bulletins! Volume 86 Number 6 June, 2013 About the Program: "Getting to know Cubic Crystals" or "An Introduction to the Isometric Crystal System" by Fred & Linda Elsnau A long title for a short, not too technical, introduction to the study of crystal shapes and how they are described.. we start with a short course on basic crystallography and then delve into the Isometric crystal System and how the different crystal faces and shapes relate to each other. Of course, with Fred’s skill in photography, there are photos of mineral examples to illustrate the features under discussion. ************************************************ From the Editor: I sincerely hope everyone received their 2013 MSSC Membership Rosters by now. If you did not, please let me know. On another topic, to be better able to get the bulletins into the member’s hands on time, I find it necessary to set a publication deadline. So, from now on, PLEASE get your articles to my no later than 7 days prior to the end of the month. (for the July Bulletin, the article deadline is June 24th) In this way, I will have time to compile, format, produce, print and mail/email bulletin so that the membership has the information in good time before each upcoming meeting. If you have something you want to submit, I will welcome it at any time, but I may not be able to use it in the “next” bulletin. Time and space may require holding your piece until it can best fit. Fred & I drove up to Santa Barbara to visit with Elizabeth Moller earlier this month. She graciously offered me Bill’s crystal models after seeing that we are interested in crystallography. (In the bulletin, no less!). She also asked if we would also pick up some books and minerals that she wanted to donate to MSSC. As a pleasant surprise, she gave me a bound set of the bulletins that were produced during the three years that Bill was Bulletin Editor , 1973 -1975. I found out several interesting things while looking through the book: Bill had 3-4 assistants to produce the bulletins, the cover design for the bulletin changed during that time and we used to have a really neat motto “with knowledge comes appreciation”! Thanks to computers and photocopies, the bulletin is much easier to produce today, the cover seems to be in flux as it’s different again and what ever happened to the motto? Anyway, I want to express my personal and MSSC’s thanks to Elizabeth for her generous contribution. ************************************************ MEANDERINGS FROM THE PRESIDENT by Ann Meister There are various events in the Pasadena area, other than our meetings and the club shows we already list, that might be of interest to the MSSC membership. I attend a lot of them -- especially the free ones -- and will now see that the pertinent one's get advance notice in the bulletin. Coming up in June, is a talk titled Forecasting Quakes: Facts, Myths and Possibilities. There are more details below in the bulletin. This is one of the monthly von Kármán lectures sponsored by JPL/NASA and named after Theodore von Kármán who was the founder and first director of JPL. The monthly lecture, by JPL scientists about work being done at JPL, takes place twice, on consecutive Thursdays and Fridays at 7 pm, at JPL and PCC. See www.jpl.nasa.gov/events/lectures.php During the school term at Caltech, there is the Earnest C. Watson Lecture Series which attempts to bring the esoteric work of Caltech researchers to a level that an (educated) public can sometimes understand. Or as Caltech explains it, "The late Caltech physicist Earnest Watson conceived the series as a public lecture program designed to explain science to the local community." Occasionally there are talks about the earth sciences or extraterrestrial geology that would be of interest to MSSC members. All talks are at Beckman Auditorium on Wednesdays at 8 pm. See www.caltech.edu/calendar/public-events The Huntington Library has frequent lectures, some free, some for members only. Since they have an extensive collection on California and the American West, some lectures have been about the history of the Gold Rush, the San Francisco Earthquake, and other such topics. This may not be specifically mineralogical, but they do cover the history of some mining areas. Check out the calendar at www.huntington.org MSSC Bulletin, June, 2013 Page 2 Volume 86 Number 6 June, 2013 Beware of fire season. It’s already started and it looks bad. Be careful in dry areas not to start a fire. If you are hiking or on back roads collecting, always be aware of escape routes, just in case. Stay safe. ************************************************ von Karman Lecture - Forecasting Quakes: Facts, Myths and Possibilities by Dr. Greg Lyzenga, Technical Staff, Solid Earth Group, Earth Sciences Section Jet Propulsion Laboratory Thursday June 20, 7:00 pm at the von Kármán Auditorium at JPL and Friday June 21, 7:00 pm at the Vosloh Forum at PCC. The recent news of Italian scientists convicted in a criminal court of failing to provide adequate warning of an impending earthquake has starkly highlighted some of the limitations and misunderstandings of the science behind earthquake forecasts and predictions. Are predictions even possible? What difference is there between a prediction and a forecast? What scientific principles allow (or rule out) useful earthquake forecasts? This talk will review the past history and basic principles behind efforts to anticipate the location, size and timing of seismic events. New techniques in data collection and improved understanding of how the Earth works is leading to ever-improving forecast capability, but will the "holy grail" of routine specific earthquake predictions ever be a reality? These questions will be explored and some thoughts about impending southern California quakes will be discussed. (From http://www.jpl.nasa.gov/events/lectures_archive.php?year=2013&month=6 ) ************************************************ MINUTES of the May 10th , 2013 MSSC Meeting: The 897th meeting of the Mineralogical Society of Southern California was called to order by President Ann Meister at 7:35 pm on May 10, 2013 at Pasadena City College, Pasadena, CA. Regular Business: A motion was made by Linda Elsnau to approve the minutes of the April meeting as published in the March Bulletin. Second: Laura Davis. Approved by members present. Announcements: If you did not receive the bulletin and the new Roster, your dues are overdue. Please mail the membership form and check to Treasurer Jim Kusely. Please note the rideshare listings in the Bulletin and help out if you can. The West Coast Gem & Mineral Show is coming up on May 17-19 in Santa Ana. The CFMS Show is coming up at the Ventura County Fairgrounds on May 31-June 2 Board meeting will be June 2 at Bruce Carter’s house. Bulletin deadline is 7 days before the end of each month. Show and Tell: Ann Meister brought one of nine volumes of the Goldschmitd Crystal Atlas. The Atlas contains 23,000 crystal drawing from various sources so that you can compare your specimen with the drawings. Program: Our speaker was Dr. George Rossman of California Institute of Technology who spoke on “What makes rubies red, (or why aren’t they green?)” The formula for corundum, Al2O3, should be colorless, if pure. But a few tenths of a percent by weight of chromium cause the color. There’s a lot more to it and George enlighten us. The monthly drawing was won by Marek Chorazewisc who selected an Ilvanite crystal from Russia. The meeting was adjourned at 8:50 pm. Discussion continued in the coffee room along with refreshments. Respectfully submitted by Ann Meister, Secretary pro tem MSSC Bulletin, June, 2013 Page 3 Volume 86 Number 6 June, 2013 **************************************************** Ride Share Listing Can You Provide A Ride? Would You Like Company On The Drive To Meetings? We have heard from several of our members that they would like to ride-share with someone to the meetings. We will list the names, general location and either a phone number or an email address of anyone who would like to connect for a ride-share. If you would like to catch a ride or would like company for the trip, let me know at [email protected] and I’ll put the information in this section of the bulletin. After that, any final arrangements made are up to you. Also, If you make a connection that works for you, let me know so that I can remove your information from the bulletin.