Category: Program Meeting

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Silicates Subject of August 20th Program Meeting

Our August 20th Program Meeting will feature a talk about Silicates, and the ways that simple tetrahedrons made of silicon and oxygen can form the multitude of silicate minerals (which, by the way make up the majority of Earth’s crust). This wlll be a chemist’s rumination on how much was missing from his “traditional” course on chemistry.

This program meeting starts at 7:00 p.m. in the Fellowship Hall of The Santa Anita Church, 226 W. Colorado Blvd., Arcadia, CA 91007. Come to learn and make new friends; open to the public, free admission. 

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Australasian Tektites Explored with Paolo Sanchez at Tuesday, June 18th Program Meeting, 7:00 p.m.

The Laos Impact Expedition: Australasian Tektites and the Hunt for their Lost Source

Paolo Sanchez in Laos

Tektites, glass blobs formed from melting terrestrial material from a high-energy meteor impact, are found all over the world. More often than not, tektites seen in the gem and mineral market come from Southeast Asia and are a part of the larger Australasian tektite strewn field, an area covering around ten percent of Earth’s surface. Despite their prominence and over a century of research done on these glasses, their source crater has remained elusive until 2019, where researchers proposed the site of a 790,000-year-old meteor impact buried under ancient lava flows and jungles of southwestern Laos. Here, PLS member Paolo Sanchez delves into a recent expedition that he and other geoscientists took to examine the geology of the potential crater, and what they found (including a lot of tektites, of course).

Tektite

In the ongoing observance of our 75th anniversary as Pasadena Lapidary Society, member Nancy Robb will provide a presentation on the history of Junior Members of PLS over the years.

This program meeting takes place at 7:00 p.m. in the Fellowship Hall of The Santa Anita Church, 226 W. Colorado Blvd., Arcadia, CA 91007. 

Come join us! Admission is free; open to the public. Enjoy refreshments while checking out the display table; bring a rock specimen you’d like identified. See you there!

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Tuesday, May 21 Program Meeting, 7:00

For our May Rock of the Month talk, PLS member Nancy Robb will provide a slide presentation on Pasadena Lapidary Society’s annual shows held from the 1940s to the 2000s, in a continuation of our 75th Anniversary observance.

This program meeting takes place at 7:00 p.m. in the Fellowship Hall of The Santa Anita Church, 226 W. Colorado Blvd., Arcadia, CA 91007.

Admission is free; open to the public. Enjoy refreshments while checking out the display table; bring a rock specimen you’d like identified. See you there!

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Stone Stories — Rocks and the Legends Associated With Them

PLS member Janie Duncan is featured speaker for the April 16th Program Meeting; 7:00 pm

A chunk of Actinolite collected from a memorable
visit to Wrightwood. Photo courtesy E. Weston

Every stone has a story. Maybe it is how it was formed or why it has a specific shape or color. Sometimes a rock tells a story that is sentimental. Do you remember the day you found a rock or perhaps someone gave one to you as a gift? Some stones have ancient fables or myths passed down for hundreds of years attached to them. Almost everyone owns a few rocks that are special to them in some way. PLS member Janie Duncan will be our featured presenter as she discusses stones and the stories they tell.

This program meeting takes place on Tuesday, April 16, 2024 at 7:00 p.m. in the Fellowship Hall of The Santa Anita Church, 226 W. Colorado Blvd., Arcadia, CA 91007. Admission is free; open to the public. Enjoy refreshments while checking out the display table. Bring a rock specimen you’d like identified – or maybe you have a special memory attached to one that you can share while you’re at the meeting. Hope to see you there!

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Meteorites Subject of March 19 Program Meeting with Dr. Nick Gessler

Pasadena Lapidary Society’s March 19, 2024 Program Meeting will feature Dr. Nicholas Gessler who will present his Meteorite program. In 2002 Dr. Gessler was honored by the designation of Mainbelt Asteroid “113355 Gessler.” 15 years later, at Duke’s Kunshan,
China campus, he hosted ‘Meteorites China’, the first international conference and exhibition of meteoritics in that country. That was emulated in 2018 by a similar conference in Jilin, China. He has discovered 13 named meteorites in California and Nevada and recovered over 1,400 fragments. Dr. Gessler continues to build a comprehensive private teaching collection, and has recently been involved in documenting the newly discovered ninth largest meteorite on Earth, named EL ALI, from Somalia. It weighs in at 15.15 tonnes and is characterized as a “IA iron.” Most likely no other meteorite has been so intimately connected with the life and fate of so many people as ‘EL ALI.” Although the meteorite is now for sale in China, with the help of colleagues at Almaas University of Mogadishu, 16 videos of it are being analyzed and there is a plan to do exploratory archaeology of its impact site near the Ethiopian border. https://people..duke.edu/”ng46/EL-Ali

PLS member Chris Kyte will provide this month’s Rock of the Month talk about Elestial, also known as Window Quartz, with a specific pattern of terminations that flow throughout the face and body of the crystal.

PLS member Nancy Robb will continue her talk on PLS’ history, this being our 75th Anniversary year. The program meeting takes place at 7:00 p.m. in the Fellowship Hall of The Santa Anita Church, 226 W. Colorado Blvd., Arcadia, CA 91007, on Tuesday, March 19, 2024. Come join us! Doors open at 6:30, admission is free; open to the public. Enjoy refreshments while checking out the display table; bring a rock specimen you’d like identified. Buy a raffle ticket for a few bucks and try your luck at winning a cool rock specimen, slab, or otherwise. We hope to see you there!

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Spotlight on Tumbling (Rocks, That is) for February 20th Program Meeting

Pasadena Lapidary Society (PLS) members provide this month’s program at 7:00 p.m. , Tuesday, February 20, 2024 — FIRESIDE ROOM (not Fellowship Hall) of the Santa Anita Church

Rock tumbling is the process of polishing rocks and minerals in a rock tumbler. This involves adding stones or minerals to the rock tumbler along with some abrasives, such as grit, fillers, and water. Phil Lahr will give a presentation on tumbling, discussing the basics – machines, grits, and processes involved. He will also have samples of rock polishing at various stages so you can see and feel the difference from one stage to the next. This is a great educational program for new rockhounds, and a refresher for older ones.

As part of our observance of PLS’ 75th Anniversary this year, Nancy Robb plans to continue her talk on PLS’ history.

Our Rock of the Month talk for February will be presented by Sue Pang as she discusses this month’s birthstone, Amethyst.

This program meeting takes place on Tuesday, January 20, 2024, at 7:00 p.m. in the (**DIFFERENT ROOM, SAME ADDRESS**) FIRESIDE ROOM of The Santa Anita Church, 226 W. Colorado Blvd., Arcadia, CA 91007. Come join us! Doors open at 6:30, admission is free; open to the public. Enjoy refreshments while checking out the display table; bring a rock specimen you’d like identified. We hope to see you there!

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January 2024 Program Meeting: TGMS – Not Your Typical Rock Show

The Tucson Gem and Mineral Society knows how to put on a great show.  This society was the first to bring together the hobby enthusiast, the curator/professionals and the general public for this annual four day event. After 68 years, it is the largest, oldest and most prestigious gem and mineral show in the world.  The 2023 show theme was “Silica, Agates & Opal & Quartz, Oh My!”

The 2024 show is slated for February 8-11, 2024. Located at the Tucson Convention Center, attendees will find approximately 250 dealers selling a variety of minerals, fossils, jewelry, and lapidary.  Throughout the show there are lectures and symposiums.  Jaw-dropping world class exhibits from private collections, major universities and museums are on display.  Other exhibit cases,  (both competitive and non-competitive) round out this mix.

For Pasadena Lapidary Society’s Tuesday, January 16, 2024 Program Meeting, our friend Mary Pat Weber will provide us with a visual treat of the highlights of the 2023 Tucson show, and why it rocks!

Rose Quartz and Garnet will be the topics of January’s Rock of the Month talk, provided by PLS Vice President Barna Laszlo.

This program meeting is at 7:00 p.m. at Fellowship Hall of The Santa Anita Church, 226 W. Colorado Blvd., Arcadia, CA 91007. Come to learn and make new friends; open to the public, free admission. 

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PLS Member Paolo Sanchez Discusses Tourmaline King Mine, Tuesday, Nov. 21st at 7:00 pm

Pasadena Lapidary Society’s Tuesday, November 21, 2023 program meeting will feature member Paolo Sanchez, who will present on the Tourmaline King Mine in the Pala Mining District of San Diego County. New pockets have been uncovered with the first discovered in January 2022, the first major find at the mine in more than 100 years, and the first in Southern California since the “Big Kahuna” pocket at the Oceanview mine in 2010. This is exciting news and we are looking forward to hearing what Paolo has to share with us about one of our favorite areas in Southern California to go gem hunting.

Tourmaline found in San Diego County, cut and set into the pendant and earrings shown here. Photo courtesy of PLS member E. Weston.

November’s Rock of the Month talk will be about our Educational Program for schools and the community. Have you ever wondered how you can help? This month’s talk will illustrate how even the newest members can participate.

This program meeting takes place on Tuesday, November 21, 2023, at 7:00 p.m. in the Fellowship Hall of The Santa Anita Church, 226 W. Colorado Blvd., Arcadia, CA 91007.

Come join us! Doors open at 6:30, admission is free; open to the public. Enjoy refreshments while checking out the display table; bring a rock specimen you’d like identified. We hope to see you there!

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Amethyst Deposits of Thunder Bay, Ontario Subject of October 17th Program Meeting

The largest commercial deposits of amethyst in North America occur near the Canadian border in Southern Ontario.  Unlike the more common Brazilian amethyst, this material is unique due to inclusions of red hematite in the outermost layers of the crystals. Our guest speaker for October, Dick Weber, first visited these deposits in the 1970s while studying for his graduate degree in Geology at the University of Minnesota, Duluth. 

Geologists Dick and Mary Pat Weber have returned to these deposits several times over the years and on two recent visits were given special access to the workings of the deposit by the mine owners.  As part of this presentation they will display some of this highly prized amethyst from their personal collections. 

This program meeting takes place at 7:00 p.m. in the Fellowship Hall of The Santa Anita Church, 226 W. Colorado Blvd., Arcadia, CA 91007, on Tuesday, October 17, 2023.

Come join us! Doors open at 6:30, admission is free; open to the public. Enjoy refreshments while checking out the display table; bring a rock specimen you’d like identified. Buy a raffle ticket for a few bucks and try your luck at winning a cool rock specimen, slab, or otherwise. We hope to see you there!

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Abalone King Featured at Tuesday, Sept. 19 Program Meeting

Pasadena Lapidary Society is excited to announce that Louis Hernandez of Abalone King will be our featured presenter for the September 19 program meeting. Louis has considerable knowledge of abalone, many years of experience in buying and selling, as well as creating gorgeous jewelry from abalone. Abalone are large gastropod mollusks that inhabit the cold waters along the California coast. While other abalone species can be found elsewhere in the world, there are seven abalone species in California: green, pink, black, white, red, pinto, and flat abalone. These highly sought-after mollusks have been ingrained in California culture for centuries.

This program meeting takes place at 7:00 p.m. in the Fellowship Hall of The Santa Anita Church, 226 W. Colorado Blvd., Arcadia, CA 91007, on Tuesday, September 19, 2023.

Come join us! Doors open at 6:30, admission is free; open to the public. Enjoy refreshments while checking out the display table; bring a rock specimen you’d like identified. Buy a raffle ticket for a few bucks and try your luck at winning a cool rock specimen, slab, or otherwise. We hope to see you there!