Veszelyite, (Cu,Zn)2Zn(PO4)(OH)3·2H2O
Dongchuan District, Kunming, Yunnan, China
FOV = 2.9 mm
#9389
NFS
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Cornwallite, Cu5(AsO4)2(OH)4
Agardite-(Y), YCu2+6(AsO4)3(OH)6·3H2O
Green sphere of cornwallite and adjacent mass of cornwallite with agardite-(Y) scattered over the surface.
Falgayrolles, Monteils, Villefranche-de-Rouergue, Aveyron, Occitanie, France.
FOV = 2.6 mm
#9388
NFS
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#Calcite can form when cool groundwater warms as it rises to the surface. Calcium carbonate exhibits inverse solubility -it's less soluble in warmer water. As a result #tufa deposits can form -like those at Mono Lake. A nice write up of groundwater carbonate deposits at:
https://www.ontariobeneathourfeet.com/flowstone-travertine-and-tufa
#MinCup23 #Ontario #Carbonate #MineralSprings
In this marble, #calcite has replaced the #aragonite that was in the rock at high pressures during subduction but has retained the shape of the aragonite columns. #MinCup23
#calcite that was formerly #aragonite columns and then partly recrystallized. Crossed polarized light images of thin sections. #MinCup23
Today's mineral I'm voting for in #mincup23 is #calcite. No surprise, since many clams make their shells from it! But calcite is a very versatile mineral. All these are calcite (Natural History Museum Vienna and Smithsonian) https://www.mineralcup.org/2023/campaigns/campaigns/campaigns/round-2-match-5
Tyrolite, Ca2Cu9(AsO4)4(CO3)(OH)8·11H2O
Azurite, Cu3(CO3)2(OH)2
Blue green tyrolite with azurite.
La Amorosa mine, San Rafael claim, Villahermosa del Rio, Castellón, Valencian Community, Spain
FOV = 3.5 mm
#9391
NFS
#minerals #mineralogy #mineral #crystals #Geology #earthsciences
Kasolite, Pb(UO2)(SiO4)·H2O
Clusters of yellow kasolite crystals.
San Rafael Mine, Cardeña, Córdoba, Andalusia, Spain
FOV = 1.8 mm
#9392
NFS
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Hubeite, Ca2Mn2+Fe3+Si4O12(OH)·2H2O
Manganbabingtonite, Ca2Mn2+Fe3+Si5O14(OH)
Fengjiashan Mine, Daye Co., Huangshi, Hubei, China
Reddish brown hubeite with dark manganbabingtonite on quartz.
FOV = 0.9 mm
#9393
NFS
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@georgetakei They seem to think that those they hurt will vote from them as the GOP will blame the DEMS. This just hardens my resolve to never vote Republican. Come election time, any GOP candidates knocking I my door are going to get an ear full and told in no uncertain terms to never return.
Fluoro-edenite, NaCa2Mg5(Si7Al)O22F2
Multiple fluoro-edenite crystals associated with tridymite and a feldspar group mineral.
Harter Mountain, Linn County, Oregon, USA
FOV = 3.6 mm
#9397
NFS
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Enstatite, Mg2Si2O6
Fluorapatite, Ca5(PO4)3F
Several brown enstatite crystals with colorless needles of fluorapatite.
The steep terminations of the enstatite distinguish from the fluoro-edenite found here.
ID based on comparison to analyzed material from similar Oregon localities.
FOV = 1.4 mm
#9398
NFS
#minerals #mineralogy #crystals #Geology #earthsciences
Fluoro-edenite, NaCa2Mg5(Si7Al)O22F2
Several yellowish brown fluoro-edenite crystals. They can be distinguished from enstatite by the flatter crystal termination.
ID based on comparison to similar analyzed material from similar Oregon localities.
Harter Mountain, Linn County, Oregon, USA
FOV = 1.7 mm
#9399
NFS
#minerals #mineralogy #Geology #mineral #earthsciences
@jaykuo All active and retired military and all active and retired federal civil service persons that lose there paychecks should send McCarthy a bill due on receipt for missed pay. He and his fellow thugs can pay the bills out of pockets.
Augite, (Ca,Mg,Fe)2Si2O6
Enstatite, Mg2Si2O6
Fluorapatite, Ca5(PO4)3F
Tridymite, SiO2
Light olive green augite at center with and enstatite crystal extending down from the lower right corner. There are several elongated colorless fluorapatite crystals visible. Numerous pseudohexagonal tridymite crystals are scatter across the specimen.
Harter Mountain, Linn County, Oregon, USA
FOV = 1.1 mm
#9400
NFS
#minerals #crystals #mineralogy #Geology
Mineral collector for past 70 years. Served 21 years in United States Navy and 20 years at Puget Sound Naval Shipyard. Wife and I plus 3 granddaughters are llama owners.