Note 1 - Description of business and nature of operations	6 Months Ended
Sep. 30, 2011
Nature of Operations [Text Block]	Note 1 – Description of Business and Nature of Operations Green River Resources Corp. (an Alberta corporation) (“GRC”) formed on December 1, 2004 and its wholly owned subsidiary, Green River Resources, Inc. (a Utah corporation) (“GRI”), formed on February 16, 2005, were formed for the purpose of extracting oil from tar sands, oil sands, oil shale, and other similar types of naturally occurring hydrocarbons in a cost effective and environmentally safe manner. As described in Note 2 below, GRC completed a merger transaction with American Sands Energy Corp. (formerly Millstream Ventures, Inc.) (“ASEC”), a publicly traded company, on June 3, 2011. The merger transaction is treated as a reverse acquisition with GRC treated as the accounting acquirer. References to the “Company” refer to GRC and its wholly-owned subsidiary, GRI, prior to the reverse merger transaction on June 3, 2011, and GRC, GRI, and ASEC (the legal parent) subsequent to the reverse merger transaction. The Company has not commenced operations and, in accordance with Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 915, Development Stage Entities, is considered a development stage company. The Company has acquired rights to tar sand ore covering approximately 2,000 acres of prime tar sand deposits in the Sunnyside area of Utah. The Company has licensed proprietary extraction technology with Bleeding Rock, LLC (“Bleeding Rock”), which has an exclusive license to a bitumen and hydrocarbon extraction process that the Company believes separates oil and other hydrocarbons from sand, dirt and other substances on a 99% efficiency basis, without creating tailing ponds and other environmental hazards. Bleeding Rock owns a majority of the Company and is 50% owned in combination among the president of the Company and two of his relatives. The Company and Bleeding Rock entered into an Operating Agreement dated May 31, 2005 (amended on August 1, 2008), whereby the Company will develop and operate a bitumen extraction system. Specifically, the agreement provides that the Company will design, engineer, construct and operate a facility for the extraction of hydrocarbons from tar sand, oil sand and oil shale located on the leases held by the Company. The activities of the parties pursuant to the Operating Agreement are to be coordinated by an operating committee to be comprised of two persons from both Bleeding Rock and the Company. The operating committee is responsible for: (a) the review and approval of engineering and construction designs and plans, schedules and expenditures, and the development of an extraction system and (b) the consideration and approval of the budget and operating plan of the extraction facility for each fiscal year. The term of the Operating Agreement is indefinite. The agreement terminates if the parties so agree or either party commits a material breach that is not rectified for a period of 30 days.

Note 1 - Description of business and nature of operations

6 Months Ended

Sep. 30, 2011

Note 1 – Description of Business and Nature of Operations

Green River Resources Corp. (an Alberta corporation) (“GRC”) formed on December 1, 2004 and its wholly owned subsidiary, Green River Resources, Inc. (a Utah corporation) (“GRI”), formed on February 16, 2005, were formed for the purpose of extracting oil from tar sands, oil sands, oil shale, and other similar types of naturally occurring hydrocarbons in a cost effective and environmentally safe manner. As described in Note 2 below, GRC completed a merger transaction with American Sands Energy Corp. (formerly Millstream Ventures, Inc.) (“ASEC”), a publicly traded company, on June 3, 2011. The merger transaction is treated as a reverse acquisition with GRC treated as the accounting acquirer. References to the “Company” refer to GRC and its wholly-owned subsidiary, GRI, prior to the reverse merger transaction on June 3, 2011, and GRC, GRI, and ASEC (the legal parent) subsequent to the reverse merger transaction. The Company has not commenced operations and, in accordance with Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 915, Development Stage Entities, is considered a development stage company.

The Company has acquired rights to tar sand ore covering approximately 2,000 acres of prime tar sand deposits in the Sunnyside area of Utah. The Company has licensed proprietary extraction technology with Bleeding Rock, LLC (“Bleeding Rock”), which has an exclusive license to a bitumen and hydrocarbon extraction process that the Company believes separates oil and other hydrocarbons from sand, dirt and other substances on a 99% efficiency basis, without creating tailing ponds and other environmental hazards. Bleeding Rock owns a majority of the Company and is 50% owned in combination among the president of the Company and two of his relatives.

The Company and Bleeding Rock entered into an Operating Agreement dated May 31, 2005 (amended on August 1, 2008), whereby the Company will develop and operate a bitumen extraction system. Specifically, the agreement provides that the Company will design, engineer, construct and operate a facility for the extraction of hydrocarbons from tar sand, oil sand and oil shale located on the leases held by the Company.

The activities of the parties pursuant to the Operating Agreement are to be coordinated by an operating committee to be comprised of two persons from both Bleeding Rock and the Company. The operating committee is responsible for: (a) the review and approval of engineering and construction designs and plans, schedules and expenditures, and the development of an extraction system and (b) the consideration and approval of the budget and operating plan of the extraction facility for each fiscal year.

The term of the Operating Agreement is indefinite. The agreement terminates if the parties so agree or either party commits a material breach that is not rectified for a period of 30 days.