Consolidated Balance Sheets (Unaudited) (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 680,282	$ 316,430
Trade accounts receivable	43,230	16,421
Inventory (Note 4e)	72,281	18,822
Deferred charges (Note 4m)	7,568	0
Prepaid expenses and other assets	6,745	1,759
Total current assets	810,106	353,432
Non-current assets:
Deposits	15,500	26,200
Property, plant and equipment, net (Note 4g)	286,389	93,966
Deferred tax assets (Note 4m)	27,519	0
Inventory (Note 4e)	1,051	5,212
Intangible assets, net (Note 4i)	957	639
Other assets	144	111
Total non-current assets	331,560	126,128
Total assets	1,141,666	479,560
Current liabilities:
Trade accounts payable	80,335	13,009
Accrued expenses (Note 4j)	7,658	4,225
Income taxes payable	14,131	0
Debt (Note 4l)	2,610	0
Short-term borrowing - related party (Note 9)	2,384	3,085
Current portion of asset retirement obligation (Note 4k)	394	393
Total current liabilities	107,512	20,712
Non-current liabilities:
Asset retirement obligation (Note 4k)	12,840	12,078
Debt (Note 4l)	195,073	0
Other non-current liabilities	148	257
Total non-current liabilities	208,061	12,335
Total liabilities	315,573	33,047
Commitments and contingencies (Note 6)
Equity:
Common stock, $0.001 par value; 350,000,000 shares authorized at June 30, 2011 (Note 4n)	84	82
Preferred stock, $0.001 par value; 5,000,000 shares authorized at June 30, 2011 (Note 4n)	2	0
Additional paid-in capital	865,811	539,866
Accumulated other comprehensive income	1,193	0
Deficit accumulated during the development stage	(51,166)	(93,435)
Total Molycorp stockholders' equity	815,924	446,513
Noncontrolling interest (Note 5)	10,169	0
Total equity	826,093	446,513
Total liabilities and equity	$ 1,141,666	$ 479,560