iiinova — where your digital self keeps evolving

Replies

mineralcup.bsky.social @mineralcup.bsky.social · 11/09/2026

#MinCup26 Round 1 Match 11 It's a pair of minerals that pull off near-magical tricks with their properties as ubiquitous #Calcite is up against rarity #Julienite. VOTE: www.mineralcup.org/2026/vote-re... RESULTS: www.mineralcup.org/2026/vote-re...

mineralcup.org

Vote in Round 1 Match 11 — Mineral Cup & Ore Cup

Vote in Calcite vs Julienite Credit: Harold Moritz and David Hospital

1:10 AM · Sep 11, 2026

000

Alexandra Witze @alexwitze.bsky.social · 11/09/2026

↪ Replying to @mineralcup.bsky.social

Calcite is ubiquitous, yes, but you still gotta go with the mineral that Vikings used to navigate, as the “sunstone” that allowed them to detect the direction of the sun #Calcite #IcelandSpar #Sunstone #MinCup26

static.klipy.com

Viking Drakkar Ship with Red Sail Under Rainbow

Alt: Viking Drakkar Ship with Red Sail Under Rainbow

0428

stonegecko.bsky.social @stonegecko.bsky.social · 11/09/2026

↪ Replying to @mineralcup.bsky.social

#MinCup26 Round 1 Match 11: The special optics of calcite win the day against a pretty but ephemeral mineral. It's also a gateway teaching mineral into hardness, cleavage, biomineralisation, sedimentary geology, weathering & erosion. What's not to like?

2213

Ella Lio Hihsommet @ellahihsommet.bsky.social · 11/09/2026

↪ Replying to @mineralcup.bsky.social

The one helps reconstruct history, the other goes bye-bye in water and alcohol? Sorry, but I like my mi erals durable. #Calcite it is.

061

Dr Joseph Graly @drjosephgraly.bsky.social · 11/09/2026

↪ Replying to @mineralcup.bsky.social

Obviously has to be #Calcite! Key regulator of Earth's carbon cycle.

071

N. M. (they/she)⚒️ 🇩🇪 🇳🇱 🇪🇺🏳️‍⚧️🌈 @yirara-bah.bsky.social · 11/09/2026

↪ Replying to @mineralcup.bsky.social

Calcite. 100%. No alternative for me. It's just so interesting and varied. This blue-ish streak isn't as interesting for me.

051

Kaia Vintr @kaiavintr.bsky.social · 11/09/2026

↪ Replying to @mineralcup.bsky.social

There's no Wikipedia article for Julienite🤔

020

Ru Temple 🌈🧶🫛 @rutemple.bsky.social · 12/09/2026

↪ Replying to @mineralcup.bsky.social

My favorite encounter with calcite was some footprints in what had been mud some tens of thousands of years ago in the long sealed-off cave at Pech Merl, in Cabrarets, France, where now they still allow so many people per year in to see the paintings and wonderful caves.

030

A Jill in Illinois @jillinois.bsky.social · 12/09/2026

↪ Replying to @mineralcup.bsky.social

Damn it! I just finished a week of minerals in Earth Science with my 6th graders. Wish I had known, but we’ll try to jump in next week. And #TeamCalcite for me.

120