WikiCards
Play on iPhone nowFree in Safari. Add it to your Home Screen.Play
WikiCards · Card list · Science cards · Crystal twinning
Uncommon card · Science
Crystal twinning, an Uncommon card
Crystal twinning occurs when two or more adjacent crystals of the same mineral are oriented so that they share some of the same crystal lattice points in a symmetrical manner.
- Rarity
- Uncommon
- Domain
- Science
- ATK
- 77
- DEF
- 89
- Power
- 166
- Wikipedia reads a year
- 40,000
Power 166 (ATK + DEF): stronger than 85 % of WikiCards cards.
Crystal twinning quiz: 3 questions
Three questions on the Crystal twinning card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
The result is an ______ of two separate crystals that are tightly bonded to each other.
Answer
intergrowth. The result is an intergrowth of two separate crystals that are tightly bonded to each other. From the Crystal twinning article on Wikipedia.
Which of these cards hits hardest (highest ATK)?
Answer
Crowdsourcing. Crowdsourcing 92 · Ceramic capacitor 86 · Crystal twinning 77 · Antibiotic sensitivity testing 73 ATK in WikiCards.
Which of these Wikipedia articles is read the most in a year?
Answer
Crowdsourcing. Crowdsourcing 64,000 · Crystal twinning 40,000 · Richard Cantillon 32,000 · Antibiotic sensitivity testing 15,000 Wikipedia reads over a year.
In a duel, each round asks a question like these about the opposing card, with 15 seconds to answer.
The facts on the card
The card carries these facts from its Wikipedia article.
- The result is an intergrowth of two separate crystals that are tightly bonded to each other.
- The surface along which the lattice points are shared in twinned crystals is called a composition surface or twin plane.
- In crystallography twinned crystals are described by a number of twin laws, which are specific to the crystal structure.
Why it is Uncommon
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Crystal twinning article was read about 40,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 77 and blocks with 89: each hit it takes is cut by 36 %.
How to get Crystal twinning
Open packs. Each pack holds five cards drawn from real Wikipedia articles, the rarest last, and the fifth card is always Rare or better. The odds are shown in the game. A free pack arrives every hour and two can wait, and the Coins you win in duels buy more packs.
More Science cards
Cards close in power
The cards just above and just below Crystal twinning in the power ranking, all domains together.
- History of the BalkansUncommon · History · ATK 87 DEF 79
- Little BootsUncommon · Arts · ATK 80 DEF 86
- Ceramic capacitorUncommon · Science · ATK 86 DEF 80
- Jordan ValleyUncommon · Nature · ATK 79 DEF 87
- Silvio SantosUncommon · Society · ATK 80 DEF 86
- Arthur ComptonUncommon · History · ATK 75 DEF 91
Card lists
- Wikipedia quizNew questions every day
- All cards from A to ZEvery card, by name
- Science cards
- Legendary cards
- Tier listS and A tiers by power (ATK + DEF)
Credits
Text : Wikipedia, Crystal twinning (revision), CC BY-SA 4.0. Photo : Robert M. Lavinsky, CC BY-SA 3.0, Wikimedia Commons.
