【Plagioclase vs Garnet】 Mineral Cupの熱い激戦にまさかの斜長石が勝利！

いつからやってるのかよくわからないですが、海外の鉱物オタクによるMineral Cupなるものがツイッターで行われています。
ツイッターのアンケート機能で戦っているだけなのですが、みんなでワイワイやってます。
だいたい宝石系の鉱物が強いのですが、Geology系のクラスターの参入により造岩鉱物も善戦してます。
初戦で一番熱い戦いだったのが、この【Plagioclase vs Garnet】(斜長石 vs 柘榴石)
アンケート機能の結果表示ではわからないくらいにギリギリplagioclaseが勝ちました。

海外のついったらーたちがplagioclaseの良い写真(特に薄片)をたくさん載せていたので、ブログ記事にまとめておきました。

ROUND 1 MATCH 7. Today is a biggie!!! Two of the most popular #MinCup minerals meet in the first round of #MinCup2019. It's #PLAGIOCLASE vs #GARNET. You have 24hrs to vote for your preferred mineral to progress to Round 2 of #MinCup2019.

— Mineral Cup (@MineralCup) September 7, 2019

This is a particularly tough one! As an undergrad, zoning and twinning in plagioclase under the microscope gave me a greater understanding of crystal structures and growth mechanisms...
(Capo del Gata andesite, FOV c. 4mm pic.twitter.com/uFw1VDHcmB

— Mirren Green (@MirrenGreen) September 7, 2019

Another hard choice today. I really like #garnet but as a pegmatite person some of the albitic feldspars I have seen are absolutely lovely! So #plagioclase gets my vote today. Images of (1) albitisation in a pegmatite from Zimbabwe & (2) bladed cleavelandite also from Zimababwe pic.twitter.com/eIkvQfhoCE

— Richard Shaw (@Rashaw_Rocks) September 7, 2019

Look at the deep, mysterious beauty, and exquisite twinning of this dark plagioclase megacryst from the Klokken Intrusion, Greenland, from the @Hunterian collections.😍 pic.twitter.com/AVMOoF3CXa

— John Faithfull (@FaithfullJohn) September 7, 2019

Two words.

Labradorite. Countertops.#lifegoals #teamplag pic.twitter.com/dRPfX9OjC0

— Kelly Hereid (@KellyHereid) September 7, 2019

mincupはともかくぶらさがってる海外オタクのリプがたのしいからたのしい。

— てるてる (@IWKRterter) September 7, 2019

For those into the mechanical behavior of materials and/or the materials physics of minerals: #Plagioclase shows higher strain at higher stress and lower strain at lower stress, suggesting it could be used as a strain marker in volcanic systems.https://t.co/FaULNZahiu pic.twitter.com/YmkEBo5Mi6

— Tanis Coralee Leonhardi (@TanisLeonhardi) September 7, 2019

For those garnet enthusiasts not impressed with twinning, #plagioclase also displays remarkable oscillatory zoning! #TeamPlagioclase pic.twitter.com/swQQaa5f29

— Tanis Coralee Leonhardi (@TanisLeonhardi) September 8, 2019