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WikiCards · Card list · History cards · Coltan
Uncommon card · History
Coltan, an Uncommon card
Coltan is a dull black metallic ore from which the elements niobium and tantalum are extracted.
- Rarity
- Uncommon
- Domain
- History
- ATK
- 79
- DEF
- 68
- Power
- 147
- Wikipedia reads a year
- 100,000
Power 147 (ATK + DEF): stronger than 75 % of WikiCards cards.
Coltan quiz: 3 questions
Three questions on the Coltan card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
Niobium is used in the ______ of MRI magnets and as an additive to steel.
Answer
manufacture. Niobium is used in the manufacture of MRI magnets and as an additive to steel. From the Coltan article on Wikipedia.
Which of these cards hits hardest (highest ATK)?
Answer
Coltan. Coltan 79 · Cadillac Seville 76 · Bridget of Sweden 73 · Pataliputra 70 ATK in WikiCards.
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 niobium-dominant mineral in coltan is columbite, and the tantalum-dominant mineral is tantalite.
- Among other uses, tantalum from coltan is used to manufacture tantalum capacitors which are used for mobile phones, personal computers, automotive electronics, and cameras.
- Niobium is used in the manufacture of MRI magnets and as an additive to steel.
Why it is Uncommon
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Coltan article was read about 100,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 79 and blocks with 68: each hit it takes is cut by 27 %.
How to get Coltan
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 History cards
Cards close in power
The cards just above and just below Coltan in the power ranking, all domains together.
- Cadillac SevilleUncommon · Society · ATK 76 DEF 71
- Charles Rennie MackintoshUncommon · Arts · ATK 73 DEF 74
- ChuvashiaUncommon · Society · ATK 75 DEF 72
- Dnipropetrovsk OblastUncommon · Science · ATK 77 DEF 70
- Fakhar ZamanUncommon · Society · ATK 74 DEF 73
- KelantanUncommon · History · ATK 80 DEF 67
Card lists
- Wikipedia quizNew questions every day
- All cards from A to ZEvery card, by name
- History cards
- Legendary cards
- Tier listS and A tiers by power (ATK + DEF)
Credits
Text : Wikipedia, Coltan (revision), CC BY-SA 4.0. Photo : Robert M. Lavinsky, CC BY-SA 3.0, Wikimedia Commons.
