Is Krypton an element or a mineral?

Is krypton, the chemical element with the symbol Kr and atomic number 36 a member of the class periodic element (a pure chemical substance consisting a single type of atom, distinguished by the number of protons in the atoms' nucleii) or the class mineral (a naturally occurring substance formed through geological processes that has a characteristic chemical composition)?

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Show reasoning Reasoning

I followed this chain of reasoning:

By calculation (generator: ["in_group@trueknowledge.com"]) I know that:
periodic element is in the group periodic element and mineral

mineral is in the group periodic element and mineral

By calculation (generator: ["now@trueknowledge.com"]) I know that:
The current time is June 19th 2013, 17:52:12

I know from locally stored knowledge that:
Fact 1: Krypton is a periodic element ([fact: ["123896163@trueknowledge.com"]])

By calculation (generator: ["permanent@trueknowledge.com"]) I know that:
Fact 1 is true for all time

By calculation (generator: ["timeperiodtopoint@trueknowledge.com"]) I know that:
Fact 1 is true at June 19th 2013, 17:52:12

I know from locally stored knowledge that:
permanent applies to periodic element ([fact: ["120107253@trueknowledge.com"]])

I used the following facts to provide this answer:

Krypton is a periodic element

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periodic element is permanent

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