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PROPERTY, PLANT AND EQUIPMENT (Net Carrying Amount) (Details) ¥ in Thousands, $ in Thousands | Dec. 31, 2017 USD ($) | Dec. 31, 2017 CNY (¥) | Dec. 31, 2016 CNY (¥)
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Disclosure of detailed information about property, plant and equipment [line items] |  |  |
At December 31 | ¥ |  | ¥ 337 | ¥ 54,523
USD [Member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
At December 31 | $ | $ 52 |  |
Net carrying amount [Member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
At December 31 | ¥ |  | 337 | 54,523
Net carrying amount [Member] | USD [Member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
At December 31 | $ | 52 |  |
Net carrying amount [Member] | Buildings [Member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
At December 31 | ¥ |  | 43 | 14,108
Net carrying amount [Member] | Buildings [Member] | USD [Member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
At December 31 | $ | 6 |  |
Net carrying amount [Member] | Mining structures and mining rights [Member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
At December 31 | ¥ |  |  | 334
Net carrying amount [Member] | Mining structures and mining rights [Member] | USD [Member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
At December 31 | $ |  |  |
Net carrying amount [Member] | Machinery and equipment [Member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
At December 31 | ¥ |  | 19 | 113
Net carrying amount [Member] | Machinery and equipment [Member] | USD [Member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
At December 31 | $ | 3 |  |
Net carrying amount [Member] | Motor vehicles [Member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
At December 31 | ¥ |  | 275 | 3,908
Net carrying amount [Member] | Motor vehicles [Member] | USD [Member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
At December 31 | $ | 43 |  |
Net carrying amount [Member] | Construction in progress [Member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
At December 31 | ¥ |  |  | ¥ 36,060
Net carrying amount [Member] | Construction in progress [Member] | USD [Member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
At December 31 | $ |  |  |

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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- Definition The amount of tangible assets that: (a) are held for use in the production or supply of goods or services, for rental to others, or for administrative purposes; and (b) are expected to be used during more than one period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2017-01-01 -Paragraph 73 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=16&date=2017-03-01&anchor=para_73_e&doctype=Standard -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 54 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_54_a&doctype=Standard -URIDate 2017-03-09 + Details
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- Details
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- Details
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- Details
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- Details
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