Guests are always welcome at our meetings!  They are held on the first Wednesday of the month (excluding holidays) at 7:30 PM at the Oxnard Performing Arts Center (map below).  The format includes an educational presentation, followed by refreshments, and a short business meeting.

Sign up for Fall Classes will begin mid-August


Granodiorite – (rich in quartz, plagioclase feldspar & dark minerals)
Courtesy NPS

Wednesday, September 5, 2018
The Identification of Igneous Intrusive Rocks 

Volcanos erupt, cool down and years later evidence of the upheaval can be found.  Of the three main rock types, igneous rock is formed through the cooling and solidification of magma or lava.  (The other two types are metamorphic and sedimentary).

Geologist John Cook will show us how using a simple tri-diagram chart and identifying the relative percentage of quartz, the proper identification of a granitic rock can be quickly determined.    The public is welcome to join us at 7:30 p.m. at Thousand Oaks Room at the Oxnard Performing Arts Center for this informative program.




Sunday, August 26 at 2:30 p.m.

“Collection of Meteorites from Antarctic Ice Fields”
Lecture by Dr. Candace Kohl, UC San Diego

Candace is a member of the Advisory Committee of the UCLA Meteorite Collection.  Many very important meteorites have been collected from the “cold storage” of the Antarctic ice sheet. This continent-wide glacier is gradually moving towards the ocean; in some areas erosion by winds exposes meteorites on the surface. Candace will tell us about her experiences as a member of a collection team in Antarctica and also about participation on a team that collected a long core of Greenland ice to analyze for variations in cosmic-ray produced isotopes.  For more info visit:


National Park Service

2018 Fee Free Days on Federal Public Lands

Here are the 2018 fee free days offered for recreation sites under the management of the National Park Service and the U.S. Forest Service.  While many parks, facilities and services associated with these agencies are free, some require a fee. Recreation fees, authorized by the Federal Lands Recreation Enhancement Act, enable federal land management agencies to reinvest in the management of various recreation sites.

2018 Fee Free Days
September 22 – National Public Lands Day
National Park Service/U.S. Forest Service
November 11 – Veterans Day
National Park Service
U.S. Forest Service (11th and 12th)


Death Valley National Park Fossil Thieves

$1,000 Reward – Death Valley National Park

Fossil Thieves stole several fossilized footprints, which had been left in a lakebed by mammals and birds, were missing. Now, Ryan F. Mandelbaum reports for Gizmodo, the National Park Service is asking for the public’s help in identifying a group of backpackers who may have information on the ancient tracks.  In a statement, the National Park Service released the photos of three men who might have witnessed the crime or have knowledge about the disappearance of the footprints. Investigators are offering an award of up to $1000 “for information leading to the identification, arrest, and conviction of those responsible,” the statement reads. According to Mandelbaum, investigators are planning to interview visitors who frequented the Park at the time of theft, in the hopes that someone will be able to provide valuable clues.

Destroying—or pilfering—the property of national parks is prohibited by law. “It’s illegal to collect fossils, rocks, or anything else in National Parks,” Park Superintendent Mike Reynolds said in a statement about the fossil thefts. “The purpose of National Parks is to conserve the landscape and everything it contains for the next generation. I ask that visitors come and enjoy all there is to see, and to leave it unimpaired for others to enjoy.”

The National Park Service has asked anyone with information about the stolen fossils to call the Investigative Services Branch at 1-888-653-0009.

The Oxnard Gem & Mineral Society meets at the:

Oxnard Performing Arts Center
Thousand Oaks Room
800 Hobson Way
Oxnard, California 93030