Richard Gibson

Non- #MineralMonday Man-made taconite pellets, compressed pulverized iron ore, collected at a mine in Upper #Michigan in 1967. The #EdmundFitzgerald had 26,000 tons more than this 50 years ago today. ⚒️ #geology . No MAGA! Science = Resistance! #standupforscience

For sure, that's amazingly cool. Thanks!

Perhaps... this one is really complex and I don't pretend to have the full story, but I'm working on a substack post about it... 🙂

#MineralMonday #Copper pseudomorph after pseudohexagonal aragonite twin, Corocoro, Bolivia. ⚒️ #geology . No MAGA! Science = Resistance! #standupforscience

Ojuela A world-class locality

#MineralMonday Mimetite, wulfenite, and adamite from Ojuela, Mexico at The Geologic Column today. richardigibson.substack.com/p/ojuela ⚒️ #geology . No MAGA! Science = Resistance! #standupforscience

#MineralMonday Youngite = brecciated agate and/or jasper + chalcedony. 4 x 4 cm. Fluorescent. Guernsey, Wyoming USA ⚒️ #geology . No MAGA! Science = Resistance! #standupforscience

#NoKings in #Butte

I don't think there are enough chemicals to eradicate the smell.

#MineralMonday Topaz, red with rutile inclusions. 7 x 6 cm. Tepetate, San Luis Potosi, Mexico ⚒️ #geology . No MAGA! Science = Resistance! #standupforscience

Next time you're in Montana, go to the clay pit in the Greyson Shale (Belt) north of Cardwell. It's where Clays in Calico in Cardwell got their materials.

#MineralMonday Barite, Cerro Warihuyn, Miraflores, Huamalies Prov., Huanuco, Peru. 88 mm. ⚒️ #geology . No MAGA! Science = Resistance! #standupforscience

Oil on calcite Rensselaer, Indiana

More information here: richardigibson.substack.com/p/oil-on-cal...

#MineralMonday Calcite, Rensselaer, Indiana USA, 8 cm wide. The brown coating is from petroleum in the host rock. ⚒️ #geology . No MAGA! Science = Resistance! #standupforscience

Equinox sun and rock of the day

Equinox sun and Rock of the Day. Today's bike ride. richardgibsonphotos.substack.com/p/equinox-sun

#MineralMonday #Gold octahedron 0.8 mm, on quartz, Ouray Mining District, Colorado. ⚒️ #geology . No MAGA! Science = Resistance! #standupforscience

#MineralMonday Quartz pseudomorphs after anhydrite, Rio Grande do Sul, Brazil. Longest blade 10.5 cm, on quartz with green celadonite in basalt vug. ⚒️ #geology . No MAGA! Science = Resistance! #standupforscience

#MineralMonday Calcite, butterfly/knee/heart twins, attrib to Frizington, Cumbria, England. Probably mined before 1910; some tiny hematite inclusions. ⚒️ #geology . No MAGA! Science = Resistance! #standupforscience

#MineralMonday Cristobalite “snowflakes” in obsidian, Arizona USA. ⚒️ #geology . No MAGA! Science = Resistance! #standupforscience

#MineralMonday Malachite, Mud Springs Range, New Mexico USA. 1.5 mm. ⚒️ #geology . No MAGA! Science = Resistance! #standupforscience

Must have been named by the same one that named cavansite (Ca-Vanadium-Silicon).

After I moved from Houston to Denver I would troll my friends by telling them I was putting some chips out to crispen them up :)

#MineralMonday Erythrite, Sonora, Mexico. Cobalt arsenate, Co3(AsO4)2 · 8H2O. Field of view approx. 1 cm. ⚒️ #geology . No MAGA! Science = Resistance! #standupforscience

#MineralMonday Smoky Quartz, Switzerland, approx. 2 cm. Unusual faces are probably trapezohedrons or steep rhombohedrons. ⚒️ #geology . No MAGA! Science = Resistance! #standupforscience

#MineralMonday Xocomecatlite (green), Trixie Mine, Utah USA. More here, with gold: richardigibson.substack.com/p/xocomecatl... ⚒️ #geology . No MAGA! Science = Resistance! #standupforscience

I also thought Hallucigenia immediately!

Or a strongly worded letter.

Wednesday's Whitehall #Montana speaker is Betsy Brandborg from Friends of the Third Branch. On keeping Montana's courts nonpartisan! #Indivisible

#MineralMonday Uraninite, Spruce Pine, North Carolina USA, cube with malformed dodecahedrons, 1 cm.⚒️ #geology . No MAGA! Science = Resistance! #standupforscience

#MineralMonday Star muscovite (twins), 3 cm high. Jenipapo pegmatite, Itinga, Minas Gerais, Brazil. ⚒️ #geology . No MAGA! Science = Resistance! #standupforscience

I especially like one of the comments: "The approval-rating poll must have been done with 10 people wearing MAGA hats and the 10th one misunderstood the question."