www.mineralcollection.eu/product/2314...
Marmatite from the Eagle Mine, Gilman, Colorado, USA
22 mm x 22 mm excl. stand
13 gram incl. stand
€ 15
#marmatite #metalsulfides #eaglemine #coloradominerals #usaminerals #mienrals #rocks #crystals #sones

www.mineralcollection.eu/product/2294...
Grossular on calcite matrix from Sierra de Cruces, Sierra Mojada Municipality, Mexico
5.5 xcm x 3.5 cm x 3 cm excl. box
58 gram incl. box
€ 25
#grossular #silicates #nesosilicates #sierradecruces #mexicanminerals #mienrals #rocks #crystals #stones

www.mineralcollection.eu/product/2314...
Aerinite from Estopiñán del Castillo, Huesca, Spain
22 mm x 18 mm excl. box
8 gram incl. box
€ 7
#aerinite #silicates #inosilicates #estopiñan #spanishminerals #micromounts #mienrals #rocks #crystals #stones

www.mineralcollection.eu/product/2317...
Sepiolite from the Sepiolite deposit, Vallecas, Spain
20 mm x 15 mm excl. box
7 gram incl. box
€ 12
#sepiolite #silicates #phyllosilicates #systematicminerals #thumbnails #vallecas #spanishminerals #mienrals #rocks #crystals #stones

I'm giving my vote to tetrahedrite!

As Sack & Loucks showed in 1985, the multisite reciprocal replacement of Cu <-> Ag, Fe <-> Zn, Cu <-> Fe, and As <-> Sb make it the "Rolls Royce" of indicator mienrals for the pressure, temperature, and pH conditions of an ore deposit. Vote for the ore with more!

www.mineralcollection.eu/product/2374...
Aluminite from the Newhaven Cliffs (Fort Hill), Lewis, England, UK
25 mm x 23 mm excl. box
10 gram incl. box
€ 20
#aluminite #sulfates #englishminerals #ukminerals #thumbnailminerals #mienrals #rocks #crystals #stones

www.mineralcollection.eu/product/2412...
Labuntsovite from the Kovdor Zheleznyi Mine (TL) , Kovdor Massif, Russia
20 mm x 17 mm excl. stand
4 gram incl. stand
€ 30
#labuntsovite #silicates #cyclosilicates #kovdor #russianminerals #typelocality #thumbnailminerals #mienrals #rocks #crystals #stones

The International Clay Conference is approaching fast and the first speaker of the week will be our George Brown Lecturer, Stephan Kaufhold.

Learn more about Stephan and his work by listening to his recent conversation with Steve Hillier here:
www.youtube.com/watch?v=cKfh...
@minersoc.bsky.social