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5. SULFATOS CHILE/BLUESTONE S.A. (Details Narrative) (USD $)	Jun. 30, 2012
Note receivable	$ 135,000
Amount paid	$ 2,065,000

X

- Definition

Custom Elemnet.

+ References

No definition available.

+ Details

Name:	cuau_AmountPaid
Namespace Prefix:	cuau_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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- Definition

Custom Elemnet.

+ References

No definition available.

+ Details

Name:	cuau_NoteReceivable
Namespace Prefix:	cuau_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant