Tag: minerals
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ESCONI Events for November 2025
Field trips require membership, but visitors are welcome at all meetings! Sat, Nov 1st Mineralogy Study Group Meeting – 7:30 PM at the College of DuPage Technical Education Center (TEC) Building – Room 1038B (Map) – “Fluorite” Bring your specimens for “Show and Tell” Sat, Nov 8th Junior Group Meeting – 6:30 PM There will be a presentation about the…
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Northwest Illinois Rock Club’s 2025 Jewelry, Gem, Fossil, and Mineral Show – November 8th and 9th, 2025
It you’re up near Freeport, IL the weekend of November 8th and 9th, 2025. This looks like a good time! More information on their Facebook page.
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Throwback Thursday #287: Cafe ESCONI Menu
Unfortunately, we don’t have a year for this story. It was probably in the early 1990s. If anyone remembers when the display first appeared, please send it to esconi.info@gmail.com. Sylvia Josefek and her husband Paul were very active in ESCONI during 1980s and 1990s. Paul was Treasurer from 1985 until 1990, while Sylvia was interested…
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Throwback Thursday #285: Looking Back at ESCONI For October 2025
A look back at October 1955, 1975, and 2000
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ESCONI October 2025 Mineral Study Group – October 4th, 2025 at 7:30 PM at the College of DuPage – “Calcite”
The ESCONI Mineral Study Group will meet on Saturday October 4th, 2025 at 7:30 PM in TEC 1038B at College of DuPage in Glen Ellyn. See Directions and Map below. The program will be on “Calcite”, presented by Mike Litt and Dave Carlson. Calcite has the largest variety of forms of any mineral, and may…
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ESCONI Events for October 2025
Field trips require membership, but visitors are welcome at all meetings! Sat, Oct 4th Mineralogy Study Group Meeting – 7:30 at the College of DuPage Technical Education Center (TEC) Building – Room 1038B (Map) – “Calcite” Fri, Oct 10th General Meeting – 8:00 PM – via Zoom. Foreman Bandama of the Field Museum will be presenting “Great Zimbabwe…
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Deep-Earth Diamonds Reveal ‘Almost Impossible’ Chemistry
Scientific American has a story about the formation of diamonds. Inclusions are imperfections in gem stones. They are tiny bits of the surrounding rock when the gem or crystal forms. Inclusions in two diamond samples from South Africa are shedding light on how diamonds form deep in Earth’s mantle. The two new diamond samples each…
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ESCONI Field Trip to Bellevue, MI Quarry on Saturday, September 27th, 2025
A field trip to a quarry in Bellevue, MI is scheduled for Saturday, September 27th, 2025. This is a joint trip with the Kalamazoo Geological and Mineral Society (KGMS), and will be led by KGMS members. There is space for 15 ESCONI members. The trip will be from 9 AM ET to 3 PM ET.…
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ESCONI Events for September 2025
You do not need to be a member to attend meetings Sat, Sep 6th and Sun, Sep 7th Field Trip – Braceville, IL for Mazon Creek Fosssils Fri, Sep 12th – 8:00 PM General Meeting – 8 PM – via Zoom Dr. Angela Cooper will be presenting “Cahokia Mounds State Historic Site.” Sat, Sep 13th…
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ESCONI Rock, Mineral, and Fossil Swap – August 23rd, 2025 – DuPage County Fairgrounds
ESCONI will be holding a Rock, Mineral, and Fossil Swap on August 23rd, 2025 at the DuPage County Fairgrounds from 8:00 AM to 2:00 PM. Come on out!
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Throwback Thursday #268: Looking Back At ESCONI For June 2025
This is Throwback Thursday #268. In these, we look back into the past at ESCONI specifically and Earth Science in general. If you have any contributions, (science, pictures, stories, etc …), please send them to esconi.info@gmail.com. Thanks! email:esconi.info@gmail.com. 25 Years Ago – June 2000 50 Years Ago – June 1975 70 Years Ago – June…
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ESCONI Events for May 2025
Field trips require membership, but visitors are welcome at all meetings! Sat, May 3rd ESCONI Mineralogy Study Group – 7:30 PM – Topic: “Herkimer Diamond Mines” by Elizabeth Thielen In-person at College of DuPage: Technical Education Center (TEC) Building – Room 1038B (Map). Fri, May 9th ESCONI General Meeting – 8:00 PM via Zoom – Topic: “Combining…
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Throwback Thursday #260: New Museum Los Gatos (NUMU)
This is Throwback Thursday #260. In these, we look back into the past at ESCONI specifically and Earth Science in general. If you have any contributions, (science, pictures, stories, etc …), please send them to esconi.info@gmail.com. Thanks! email:esconi.info@gmail.com. William (Bill) Allaway was one of the founding members of ESCONI in 1949. And actually, the first…
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2025 ESCONI Gem, Mineral, and Fossil Show – March 15th and 16th at the DuPage Fair Grounds
Day 1 report… Awesome! One more day, don’t miss it! Here are some photos! Lots of smiling faces at the welcome tables! Cuddle up with a Tully Monster… Charlie Shabica stopped by to say hello. Jack Wittry with Rich and Pete Rock Lots of books! Eric at the Junior tables More similing faces! Don busy…
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2025 ESCONI Gem, Mineral, and Fossil Show – March 15th and 16th at the DuPage Fair Grounds
Today is the day! Come on out! Photos from setup day… Live Auctions Displays
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2025 ESCONI Gem, Mineral, and Fossil Show – Preview #26: Galena
This is the preview post #26 for the 2025 ESCONI Gem, Mineral, and Fossil Show Live Auction. The ESCONI Gem, Mineral, and Fossil Show for 2025 will be held on March 15th and 16th at the DuPage Fairgrounds in Wheaton, IL, which is the same location as last year. All details can be found here.…
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2025 ESCONI Gem, Mineral, and Fossil Show – Preview #20: Fluorite from Cave-In-Rock in Illinois
This is the preview post #20 for the 2025 ESCONI Gem, Mineral, and Fossil Show Live Auction. The ESCONI Gem, Mineral, and Fossil Show for 2025 will be held on March 15th and 16th at the DuPage Fairgrounds in Wheaton, IL, which is the same location as last year. All details can be found here.…
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Throwback Thursday #256: Scenes from the 2018 Show
This is Throwback Thursday #256. In these, we look back into the past at ESCONI specifically and Earth Science in general. If you have any contributions, (science, pictures, stories, etc …), please send them to esconi.info@gmail.com. Thanks! email:esconi.info@gmail.com. Here are some scenes from the 2018 ESCONI Gem, Mineral, and Fossil Show, which was held on…
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2025 ESCONI Gem, Mineral, and Fossil Show – Preview #18: Green Fluorite from China
This is the preview post #18 for the 2025 ESCONI Gem, Mineral, and Fossil Show Live Auction. The ESCONI Gem, Mineral, and Fossil Show for 2025 will be held on March 15th and 16th at the DuPage Fairgrounds in Wheaton, IL, which is the same location as last year. All details can be found here.…
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2025 ESCONI Gem, Mineral, and Fossil Show – Preview #15: Calcite
This is the preview post #15 for the 2025 ESCONI Gem, Mineral, and Fossil Show Live Auction. The ESCONI Gem, Mineral, and Fossil Show for 2025 will be held on March 15th and 16th at the DuPage Fairgrounds in Wheaton, IL, which is the same location as last year. All details can be found here.…
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2025 ESCONI Gem, Mineral, and Fossil Show – Preview #14: Fluorite From the Minerva Mine
This is the preview post #14 for the 2025 ESCONI Gem, Mineral, and Fossil Show Live Auction. The ESCONI Gem, Mineral, and Fossil Show for 2025 will be held on March 15th and 16th at the DuPage Fairgrounds in Wheaton, IL, which is the same location as last year. All details can be found here.…
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2025 ESCONI Gem, Mineral, and Fossil Show – Preview #11: Malachite from Bisbee, AZ
This is the preview post #11 for the 2025 ESCONI Gem, Mineral, and Fossil Show Live Auction. The ESCONI Gem, Mineral, and Fossil Show for 2025 will be held on March 15th and 16th at the DuPage Fairgrounds in Wheaton, IL, which is the same location as last year. All details can be found here.…
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2025 ESCONI Gem, Mineral, and Fossil Show – Preview #8: Thunder Bay Amethyst
This is the preview post #8 for the 2025 ESCONI Gem, Mineral, and Fossil Show Live Auction. The ESCONI Gem, Mineral, and Fossil Show for 2025 will be held on March 15th and 16th at the DuPage Fairgrounds in Wheaton, IL, which is the same location as last year. All details can be found here.…
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Video for ESCONI February 2025 Mineralogy Study Group Meeting – “Thunder Bay Amethyst”
The February 2025 Mineralogy Study Group Meeting was held on February 22nd, 2025. Our speaker was Dan Kile. His topic was “Thunder Bay Amethyst”. Dan Kile has been an ardent field collector of minerals (along with his wife, Dianne) for nearly 54 years, mostly in Colorado. In addition to field collecting activities, he has taught optical mineralogy…
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2025 ESCONI Gem, Mineral, and Fossil Show – Preview #4: Wulfenite from Chihiahua
This is the preview post #4 for the 2025 ESCONI Gem, Mineral, and Fossil Show Live Auction. The ESCONI Gem, Mineral, and Fossil Show for 2025 will be held on March 15th and 16th at the DuPage Fairgrounds in Wheaton, IL, which is the same location as last year. All details can be found here.…
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2025 ESCONI Gem, Mineral, and Fossil Show – Preview #3: Native Copper with Calcite!
This is the preview post #3 for the 2025 ESCONI Gem, Mineral, and Fossil Show Live Auction. The ESCONI Gem, Mineral, and Fossil Show for 2025 will be held on March 15th and 16th at the DuPage Fairgrounds in Wheaton, IL, which is the same location as last year. All details can be found here.…
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Throwback Thursday #251: Looking Back At ESCONI For February 2025
This is Throwback Thursday #251. In these, we look back into the past at ESCONI specifically and Earth Science in general. If you have any contributions, (science, pictures, stories, etc …), please send them to esconi.info@gmail.com. Thanks! email:esconi.info@gmail.com. 25 Years Ago – February 2000 50 Years Ago – February 1975 70 Years Ago – February…
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Video for ESCONI January 2025 Mineralogy Study Group Meeting – “Kentucky Agate”
The January Mineralogy Study Group Meeting was held on Saturday, January 4th, 2025. The topic was “Kentucky Agate”. The presenter was Matthew Bentley, who is the Geologist for the State of Kentucky. Matthew attended Morehead State University and Western Kentucky University. He has been collecting Kentucky Agates for the past 10 years. Kentucky Agate is…
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ESCONI January 2025 Mineralogy Study Group Meeting – “Kentucky Agate”
The January Mineralogy Study Group Meeting will be held via Zoom on Saturday, January 4th, 2025 at 7:30 PM. The topic is “Kentucky Agate”. The presenter is Matthew Bentley, who is the Geologist for the State of Kentucky. Matthew attended Morehead State University and Western Kentucky University. He has been collecting Kentucky Agates for the…
