Two limps of bright red and yellow mineral in translucent plastic cases with handwritten stickers saying 40 and 60
Not sure about one vendor's display practices at the Victoria Gem Show https://victoriagemshow.com/ (#MinCup25 fans can play guess the two minerals) #geology
A conglomerate with the iron oxide replaced by native copper. From Calumet and Hekla Mine, Michigan. University of Waterloo Earth Sciences Museum Collection. https://uwaterloo.ca/earth-sciences-museum/resources/detailed-rocks-and-minerals-articles/copper
Native copper in a sedimentary conglomerate. It is proposed that detrital hematite reacts with copper sulfate solutions to reduce the copper and the fluids carry away the iron and sulfur.
From Calumet and Hekla Mine, Michigan. University of Waterloo Earth […]
[Original post on fosstodon.org]
The Flemish masters painted on #copper as it provided a smooth, luminous surface that allowed fine detail and durability of the exquisite works, like this self portrait of a laughing Rembrandt.
#MinCup25 ⚒️ sci-fi 🧪 🖖🏼 scifi Geosciences #WomenInSTEM geology🍎 🔭🪐
#MinCup25 ⚒️ sci-fi 🧪 🖖🏼 scifi Geosciences #WomenInSTEM geology🍎 🔭🪐
A screen shot from James Rada, Jr.'s article on Carroll Co., Maryland and carrollite. Has a nice photo of carrollite, not from Maryland (the local samples are not photogenic).
Nice article on the type locality of #carrollite : Carroll County, Maryland and the Patapsco Mine.
jamesrada.com/carrollite-the-mineral-o...
#OreCup #OreCup25 #MinCup25 #Maryland #Sykesville #Cobalt
Octahedral crystals, polysynthetic twinning striations, super conductivity, and iridescent sheen? Yes, please. #carrollite
#MinCup25 ⚒️ sci-fi 🧪 🖖🏼 scifi Geosciences #WomenInSTEM geology 🔭🪐
#MinCup25 ⚒️ sci-fi 🧪 🖖🏼 scifi Geosciences #WomenInSTEM geology 🔭🪐
#OreCup #MinCup25 ⚒️ sci-fi 🧪 🖖🏼 scifi Geosciences #WomenInSTEM geology 🔭🪐
#OreCup #MinCup25 ⚒️ sci-fi 🧪 🖖🏼 scifi Geosciences #WomenInSTEM geology 🔭🪐
#OreCup #MinCup25 ⚒️ sci-fi 🧪 🖖🏼 scifi Geosciences #WomenInSTEM geology 🔭🪐
#OreCup #MinCup25 ⚒️ sci-fi 🧪 🖖🏼 scifi Geosciences #WomenInSTEM geology 🔭🪐
You had me at tetrahedrons, and look at the twinning! #tetrahedrite
#OreCup #MinCup25 ⚒️ sci-fi 🧪 🖖🏼 scifi Geosciences #WomenInSTEM geology 🔭🪐
#OreCup25 #MinCup25 ⚒️ sci-fi 🧪 🖖🏼 scifi Geosciences #WomenInSTEM geology 🔭🪐
#OreCup25 #MinCup25 ⚒️ sci-fi 🧪 🖖🏼 scifi Geosciences #WomenInSTEM geology 🔭🪐
#OreCup25 #MinCup25 ⚒️ sci-fi 🧪 🖖🏼 scifi Geosciences #WomenInSTEM geology 🔭🪐
A pseudomorph (false form) is when one mineral changes to another, but keeps the original form. #copper
#OreCup25 #MinCup25 ⚒️ sci-fi 🧪 🖖🏼 scifi Geosciences #WomenInSTEM geology 🔭🪐
Remember dendrites (from the Greek word dendron meaning tree)? They are tree-like minerals that form under special conditions. There is a lovely dendritic #copper sample on the upper right. Thanks Susie! More in comment 👇🏼
#OreCup25 #MinCup25 ⚒️ sci-fi 🧪 🖖🏼 scifi Geosciences #WomenInSTEM geology 🔭🪐
A figure from Canadian Energy showing North American recycling rates. Lead batteries are first at 98%, followed by aluminum cans at 67%.
#Galena is a primary ore mineral for lead.
Nearly every car on the road today, even EVs, have a lead battery for powering accessories.
Lead batteries are the most recycled product (over 99% in the US) and overall lead recycling (76%) is second only to gold […]
[Original post on fosstodon.org]
Self-portrait of Rembrandt, 1630. An example of oil painting on copper.
The Flemish masters painted on #copper as it provided a smooth surface that allowed fine detail and durability of their exquisite works, like this self portrait of Rembrandt.
#OreCup25 #MinCup25 ⚒️ sci-fi 🧪 🖖🏼 scifi Geosciences #WomenInSTEM geology 🔭🪐
Naturally occurring pure copper is called “native” copper & is formed in veins & fractures by super-heated mineral-rich fluids often associated with volcanic activity. My sample shown below. Get the lead out & vote #copper!
#OreCup25 #MinCup25 ⚒️ sci-fi 🧪 🖖🏼 scifi Geosciences #WomenInSTEM geology 🔭🪐
#OreCup25 #MinCup25 ⚒️ sci-fi 🧪 🖖🏼 scifi Geosciences #WomenInSTEM geology 🔭🪐
#OreCup25 #MinCup25 ⚒️ sci-fi 🧪 🖖🏼 scifi Geosciences #WomenInSTEM geology 🔭🪐
#OreCup25 #MinCup25 ⚒️ sci-fi 🧪 🖖🏼 scifi Geosciences #WomenInSTEM geology 🔭🪐
#MinCup25 ⚒️ sci-fi 🧪 🖖🏼 scifi Geosciences #WomenInSTEM geology 🔭🪐
I like it, but I would have loved it if the examples were all #mincup25 finalists and winners.
I’m so excited! We’re testing a bunch of small tweaks while the ideas are still fresh from #MinCup25
All the more reason #perovskite should have won #Mincup25
@mineralcup.bsky.social
