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@mineralcollection.bsky.social Oct 8, 2026, 9:37 AM

www.mineralcollection.eu/product/2446...
Calcite crystals on sphalerite from the Trepca mine, Mitrovica, Kosovo
6 cm x 5 cm
158 gram
€ 35
#calcite #sphalerite #carbonates #metalsulfides #trepca #kosovominerals #minerals #rocks #crystals

@hydromo.bsky.social Sep 28, 2026, 2:56 AM

Calcite (CaCO₃) — limestone, marble, cave formations. Fizzes with dilute HCl. Mohs 3, rhombohedral cleavage.

Specimen image: AI-generated.

apps.apple.com/us/app/rocks...

#Calcite #Minerals #Geology #RockSpin

@bowtiediene.bsky.social Sep 27, 2026, 12:56 AM

#MinCup26 Sodium chloride (aka #halite) is cool because it is transparent to infrared radiation - so it acts like a window for those wavelengths of light. And I know #julienite bumped #calcite (another mineral with a fun relationship with light), but #julienite does seem more interesting. 🤔

@wisdomoftheages.bsky.social Sep 26, 2026, 1:19 AM

Some amazing new #crystals & #gemstones that we handpicked for you all 🥰
#Fluorite #angels 😇, slices of Caribbean #Calcite giving pure ocean vibes 💙🩵, and high quality #Amethyst polished points 💜 are making their way out on our shelves today.

Which ones are calling your name? 😊

#crystalhealing

@mineralcollection.bsky.social Sep 21, 2026, 9:22 AM

www.mineralcollection.eu/product/2426...
Blue chalcedony with calcite from the Mogilata deposit, Septemvri Mine, Bulgaria
4.5 cm x 3 cm
18 gram
€ 12
#chalcedony #calcite #silicates #carbonates #mogilata #septemvri #bulgarianminerals #minerals #rocks #crystals

@bkania.bsky.social Sep 21, 2026, 1:16 AM

#Putnisite #MinCup26
#TakeDown #Calcite 💔❤️‍🩹💪

@mineralcollection.bsky.social Sep 19, 2026, 8:23 AM

www.mineralcollection.eu/product/2424...
Natrolite needles and calcite on petrified wood from the Sipi caves, Kween, Eastern Region, Uganda
4 cm x 1.5 cm excl. stand
12 gram incl. stand
€ 25
#natrolite #calcite #zeolites #carbonates #sipicaves #ugandaminerals #minerals #rocks #crystals #stones

@bkania.bsky.social Sep 17, 2026, 5:24 AM

With you all the way.
#Calcite #TeamBlue
#Azurite #MinCup26

@mineralcollection.bsky.social Sep 13, 2026, 8:14 AM

www.mineralcollection.eu/product/2418...
Pyrite on pink fluorescent calcite from the Trepca mine, Mitrovica, Kosovo
Fluorescent under both LW and SW
9 cm x 7 cm
314 gram
€ 40
#pyrite #calcite #metalsulfides #carbonates #trepca #kosovominerals #minerals #rocks #crystals #stones

@mineralcollection.bsky.social Sep 12, 2026, 8:53 AM

www.mineralcollection.eu/product/2417...
Pink fluorescent calcite on rhodochrosite from the Trepca mine, Mitrovica, Kosovo
Fluorescent under both LW and SW
14 cm x 6 cm
339 gram
€ 125
#calcite #rhodochrosite #carbonates #trepca #kosovominerals #minerals #rocks #crystals #stones

@crystallised-cricket.com Sep 12, 2026, 12:31 AM

ooooo it would seem #Calcite has been bested!! Better luck next year!

@barrygoldman1.bsky.social Sep 12, 2026, 12:18 AM

ok i'll do another #calcite post for #MinCup26
Here we have some lozenge shaped calcite xtals growing with some quartz xtals (double sided? Herkimer diamonds?) in a vein in limestone from the Helderberg formation in Albany Co. NY. North America. Silurian and Devonian shallow sea.

@minouette.bsky.social Sep 11, 2026, 11:28 PM

VOTE Calcite! Pigments, chalk, sculpture… all of art history! Take a moment to vote calcite! It's the homestretch. #MinCup26 #Calcite #arthist

Diego Velázquez, Las Meninas
1656 Medium: Oil
Support: Canvas
Size: 318 cm x 276 cm
Art period: Baroque
Museo del Prado
Inventory number: P01171

Las Meninas (Spanish for 'The Ladies-in-waiting’) is a 1656 painting in the Museo del Prado in Madrid, by Diego Velázquez, the leading artist in the court of King Philip IV of Spain and Portugal, and of the Spanish Golden Age. It has become one of the most widely analyzed works in Western painting for the way its complex and enigmatic composition raises questions about reality and illusion, and for the uncertain relationship it creates between the viewer and the figures depicted. Amongst the pigments: calcite
Via ColourLex

Vermeer, Girl with a Pearl Earring “is an exceptional example of Vermeer’s genius, it is a portrait of an unknown girl or maybe a generalized female head (called a ‘tronie’ in Netherlands).”
Pigment analysis reveals calcite chalk.

https://colourlex.com/project/vermeer-girl-with-a-pearl-earring/

Medium: Oil Support: Canvas Size: 44.5 cm x 39 cm Art period: Baroque
Mauritshuis, The Hague Painting

Fayum Mummy Portrait of a Woman ca 2nd century A.D. Medium: Encaustic Support: Wood Size: 34.6 x 11.5 cm Art period: Antiquity National Gallery of Art Object number: 1956.12.1 This portrait employs calcite as a pigment. Via https://colourlex.com/project/fayum-mummy-portrait-of-a-woman/

Michelangelo, Moses (ca. 1513–15), for the Tomb of Julius II. Collection of San Pietro in Vincoli, Rome. The Renaissance marble sculpture depicts buff, bearded, seated Moses (with horns on his head likely based on a description in chapter 34 of Exodus in the Vulgate, the Latin translation of the Bible used at that time). It is an extraordinary technical achievement to make flowing hair and lifelike anatomy.

@tkirkm.bsky.social Sep 11, 2026, 11:22 PM

Less than an hour to go, and I cannot believe that #Calcite is behind! Only a few votes needed to put it in its rightful place and on to round 2!