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Below is the list of previusly scheduled activities,
however you can assume that most have now been cancled.
(Call and check before you go.)

- All the Van Tuyl seminars at CSM (and all outside groups' meetings held on campus), for the rest of the semester are cancled
- The April 2 DMNS Earth Sciences Colloquium, on dating the K-Pg eruptions is cancled, along with numerous other meetings, including most meetings of gem and mineral clubs this month.
- Denver Museum of Nature and Science will be closed to the public, until further notice.
- And, the dinner at CU, planned to honor retired professors of the CU Department of Geological Sciences set for April 17, has been cancelled/postponed, probably until Fall.


Thurs., Mar. 19, 7:00 p.m., Colo. Sci. Soc. Monthly meeting,  2019 Colorado Avalanches: A case history of destruction in Hinsdale County, impacts to historic mining dams, and how snow avalanches may influence development of rock glaciers, by Jonathon Lovekin, Colorado Geological Survey. Berthoud Hall Room 241.


Fri.-Sat.-Sun., Apr. 10-12, Colorado Mineral and Fossil Spring Show, Crown Plaza Hotel - Convention Center, 15500 E 40th Ave., Denver, Colorado, 10-6 Fri. & Sat., 10-5 Sun., free parking & admission.


Thurs., Apr. 16, 5:30 p.m., Rise of the Mammals: Exceptional Continental Record of Biotic Recovery after the Cretaceous–Paleogene Mass Extinction (about the Corral Bluffs fossil mammal find), by Ian Miller and Tyler Lyson, Denver Museum of Nature and Science; at the CSS Annual Past Presidents’ Dinner, to be held at the Mount Vernon Canyon Club


Sat., May 16, noon-4 p.m., Silent Auction, sponsored by Colorado Chapter, Friends of Mineralogy. All are welcome; setup at 11, auction begins at noon, live auction at 1 p.m. At a new location: Wheat Ridge United Methodist Church, 7530 W. 38th Ave., Wheat Ridge (38th Ave. at Wadsworth Blvd.).


Sat., May 16, 2020 Symposium on Water and Energy, to be held in Ricketson Auditorium, Denver Museum of Nature and Science. Cosponsored by the Colorado Scientific Society, Denver Museum of Nature & Science, Center for the American West, and others. Details forthcoming!


Sun, May 17, noonish, for the monthly FSS (Florissant Scientific Society) meeting, Christine Siddoway (Colorado College) will give a talk on the Tava Sandstone (the geologically famous “sandstone injectite dikes of the Pikes Peak region”) followed by a short field trip. Osborne Center, University of Colorado at Colorado Springs. All are welcome to attend; contact Beth Simmons,, for details or to be put on the FSS mailing list.


Fri.-Sat.-Sun., June 12-14Pikes Peak Gem & Mineral Show, Norris-Penrose Event Center, 1045 Lower Gold Camp Road, Colorado Springs, CO 80905. Sponsored by the Colorado Springs Mineralogical Society. Hours: noon-7 pm Fri., 10-5 Sat, 10-4 Sun. Adult admission $5.


Thurs.-Sun., July 23-26, Fairplay Contin-Tail Gem, Mineral, and Jewelry Show, Fairplay River Park.


Thurs.-Sun., Aug. 6-9, Buena Vista Contin-Tail outdoor gem and mineral show, Buena Vista Rodeo Grounds.  Colorado’s longtime famous and best attended tent & tailgate rock swap and show.


Fri.-Sun., Aug. 14-16, Lake George Gem and Mineral Show, sponsored by the Lake George Gem and Mineral Club. Also taking place nearby “down the road” is the Woodland Park Rock, Gem and Jewelry Show, Aug. 13-16.


Fri.-Sun., Sept. 18-20, 53rd Annual Denver Gem and Mineral Show, at the Denver Mart.  2020 theme is “Fabulous Fluorite”.


Fri., Nov. 13, Colorado Science Conference for Professional Development, at the Denver Mart, 451 E 58th Ave., Denver.  See the conference website at



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For more lecture series during the year see:


Colorado Beer Talks (2nd Tuesday, 6-8 p.m.), Windy Saddle Café, 1110 Washington Avenue, Golden, “Golden’s grassroots version of TED talks, Expand your mind with a beer in your hand”,

Colorado Café Scientifique in Denver, monthly lectures on science topics held either at Blake Street Station or Brooklyn’s, Denver; open to the public, no charge other than refreshments you may choose to purchase; see .

Colorado Scientific Society (3rd Thursday, 7 p.m.), see . Meets at Shepherd of the Hills Church, 11500 W. 20th Ave., Lakewood CO, except when noted.

CU Geological Science Colloquium (Wednesdays, 4 p.m.) see

CSU Dept. of Geoscience Seminars (Fridays, 4 p.m.), see

Van Tuyl Lecture Series, Colorado School of Mines, (Thursdays, 4 p.m.):

Denver Mining Club (Mondays, 11:30), see .

Denver Museum of Nature and Science, Earth Science Colloquium series, 3:00-4:00 p.m., VIP Room unless noted, day of the week varies. Museum admission is not required; see

Denver Region Exploration Geologists Society (DREGS; 1st Monday, 7 p.m.),

Florissant Scientific Society (FSS); meets monthly in various Front Range locations for a lecture or field trip; meeting locations vary, normally on Sundays at noon; all interested persons are welcome to attend the meetings and trips; see for details and schedules.

Nerd Night Denver is a theater-style evening featuring usually 3 short (20-minute) TED-style talks on science or related topics; held more-or-less monthly at the Oriental Theater, 4335 W. 44th Ave., Denver; drinks are available; for ages 18+.  Admission is $6 online in advance, $10 at the door. See .

Rocky Mountain Map Society (RMMS; Denver Public Library, Gates Room, 3rd Tuesday, 5:30 p.m.),

Western Interior Paleontological Society (WIPS); beginning January 2019, WIPS will meet on the 1st Monday of the month, 7 p.m., at Lowry Conference Center, 1061 Akron Way, Denver. See .

Thanks to Peter J. Modreski for keeping us up to date!
To be added to his email list for upcoming events, send request to
pmodreski @