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Consolidated Statements of Operations (USD $)	3 Months Ended		9 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014
Reimbursement Revenue	$ 750,000us-gaap_ReimbursementRevenue	$ 0us-gaap_ReimbursementRevenue	$ 750,000us-gaap_ReimbursementRevenue	$ 0us-gaap_ReimbursementRevenue
Revenue, Net	750,000us-gaap_SalesRevenueNet	0us-gaap_SalesRevenueNet	750,000us-gaap_SalesRevenueNet	0us-gaap_SalesRevenueNet
EXPENSES:
Claim rentals and minimum royalties	40,389us-gaap_CarryingCostsPropertyAndExplorationRights	39,576us-gaap_CarryingCostsPropertyAndExplorationRights	120,625us-gaap_CarryingCostsPropertyAndExplorationRights	139,820us-gaap_CarryingCostsPropertyAndExplorationRights
Exploration expenses	278,390us-gaap_ExplorationExpenseMining	214,598us-gaap_ExplorationExpenseMining	492,890us-gaap_ExplorationExpenseMining	6,734,888us-gaap_ExplorationExpenseMining
Stock-based compensation expense	127,025ctgo_ShareBasedCompensationExpense	122,951ctgo_ShareBasedCompensationExpense	399,068ctgo_ShareBasedCompensationExpense	689,747ctgo_ShareBasedCompensationExpense
General and administrative expenses	650,382us-gaap_GeneralAndAdministrativeExpense	302,399us-gaap_GeneralAndAdministrativeExpense	1,782,023us-gaap_GeneralAndAdministrativeExpense	907,530us-gaap_GeneralAndAdministrativeExpense
Total expenses	1,096,186us-gaap_CostsAndExpenses	679,524us-gaap_CostsAndExpenses	2,794,606us-gaap_CostsAndExpenses	8,471,985us-gaap_CostsAndExpenses
NET LOSS	$ (346,186)us-gaap_NetIncomeLoss	$ (679,524)us-gaap_NetIncomeLoss	$ (2,044,606)us-gaap_NetIncomeLoss	$ (8,471,985)us-gaap_NetIncomeLoss
LOSS PER SHARE
Basic and diluted	$ (0.09)us-gaap_EarningsPerShareBasicAndDiluted	$ (0.18)us-gaap_EarningsPerShareBasicAndDiluted	$ (0.53)us-gaap_EarningsPerShareBasicAndDiluted	$ (2.24)us-gaap_EarningsPerShareBasicAndDiluted
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING
Basic and diluted	3,873,506us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted	3,805,539us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted	3,832,206us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted	3,774,576us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted

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The costs incurred to retain exploration and property rights after acquisition but before production has occurred. Costs include legal costs for title defense, ad valorem taxes on nonproducing mineral properties, shut-in royalties, and delay rentals.

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Total costs of sales and operating expenses for the period.

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Exploration expenses (including prospecting) related to the mining industry would be included in operating expenses. Exploration costs include costs incurred in identifying areas that may warrant examination and in examining specific areas that are considered to have prospects of mineral reserves.

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