2711
Khatyrkite ( ) is a rare mineral which is mostly composed of copper and aluminium , but might contain up to about 15 % of zinc or iron ; its chemical structure is described by an approximate formula ( Cu , Zn ) Al2 or ( Cu , Fe ) Al2 .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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