Showing posts with label galena. Show all posts
Showing posts with label galena. Show all posts
Saturday, September 12, 2015
Digging the Past Event 2015
Today, I helped out with the Digging the Past event at the Falls of the Ohio State Park. The weather was nice. A lot of visitors showed up despite the main building being closed for renovations and there is so much construction in the area involving the new Ohio River bridge. The park employees estimated about 500 cars showed up with about 1,500 visitors. I did not see many fossils being found in the Silurian Period Waldron Shale pile (mostly brachiopods and one Trimerus trilobite pygidium). The Jeffersonville limestone pile was seeded so people were bringing me some Devonian brachiopods to ID and some corals. I did see some button corals from the Speed Limestone as well.
Mostly I stayed by the washing station of the mineral pile and identified fluorite, barite, calcite, and such mineral specimens. I saw a few nice cubed pieces of fluorite early on but no blue or green material. The biggest find I saw a piece of galena. Myself and the naturalist at the Falls have never seen a galena specimen in the pile so that was quite a rarity. Also someone found a nice purple fluorite piece on a orange matrix. I do not recall seeing the orange matrix before either.
I helped a fellow volunteer with some stability issues on flying his quadcopter but a park employee came over told me to stop flying as it was against the rules. So I learned something new today. As stated on the DNR web site, "Motor Driven Airborne Devices: Motor-driven airborne devices (RC airplanes) should be operated in designated areas only or with clearance from property management. Drones are not currently permitted on DNR properties."
All and all, it was a good day and hope the people attending had fun and learned something about fossils and minerals with their visit to the Falls of the Ohio State Park.
Thursday, June 26, 2014
Fossils at San Gimignano Italy
My visit to Italy was mostly a vacation just to relax so I did not do much research to find museums or fossil/mineral sites to visit. I read that it is illegal to collect fossils in Italy and their museums have some odd schedules about being open. That said, I did keep my eyes open to geological features at places we stopped to visit. One town we spent a few hours at was San Gimignano, Italy.
One of the walls had a stone block that had some fossils in it. The fossil I could see was a small gastropod calcite fossil about 2 cm in diameter. The rest of the brown block had broken shell fragment fossils.
A nearby stone in the same wall had an interesting pattern on it. Could it be volcanic in origin?
Near the wall were olive trees, here is picture of some baby olives.
Here is a panoramic view from San Gimignano of the surrounding countryside:
I found a small shop that sold jeweler and some mineral and fossil specimens. It is called Mirone Alabastri (53037 San Gimignano, Firenze). The fossils they sold were ammonites found in Madagascar. I did find some mineral specimens from Italy there that seemed unique.
Here is a dark quartz crystal in matrix from the quarries at Monterigginoi near Siena. Learn more about the locality here: http://www.mindat.org/loc-125546.html
This green mineral might be malachite. The specimen was found at Serrabottini Massa Marittima in Grosseto Province of Tuscany Italy. Learn more about this locality here: http://www.mindat.org/loc-64651.html
The last mineral picture is a piece of galena from unknown locality.
Labels:
galena,
gastropod,
italy,
malachite,
minerals,
monteriggioni,
quartz,
san gimignano,
serrabottini,
tuscany
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