Segment Reporting (Details)	12 Months Ended
	Dec. 31, 2018 USD ($) segment	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Segment Reporting [Abstract]
Number of operating segments | segment	2
Segment Reporting Information [Line Items]
Revenues	$ 150,289	$ 104,329	$ 5,070,217
Cost and Expenses	(7,550,721)	(8,982,295)	(15,283,561)
Operating Loss	(7,400,432)	(8,877,966)	(10,213,344)
Other income (expense), net	(2,080,321)	(1,698,212)	(2,751,360)
Net loss	(9,480,753)	(10,576,178)	(12,964,704)
Capital Expenditures	1,655,820	1,810,845	3,540,491
Depreciation, amortization and depletion	3,147,892	4,187,683	5,893,783
Assets	28,611,725	30,963,913
Mining
Segment Reporting Information [Line Items]
Revenues	0	0	4,944,627
Cost and Expenses	(7,509,786)	(8,908,556)	(15,101,138)
Capital Expenditures	5,630	1,810,845	340,491
Depreciation, amortization and depletion	3,138,032	4,176,115	5,763,293
Assets	21,166,231	25,530,508
Real estate
Segment Reporting Information [Line Items]
Revenues	150,289	104,329	125,590
Cost and Expenses	(40,935)	(73,739)	(182,423)
Capital Expenditures	1,650,190	0	3,200,000
Depreciation, amortization and depletion	9,860	11,568	130,490
Assets	7,445,494	5,433,405
Operating Segments
Segment Reporting Information [Line Items]
Operating Loss	(7,400,432)	(8,877,966)	(10,213,344)
Operating Segments | Mining
Segment Reporting Information [Line Items]
Operating Loss	(7,509,786)	(8,908,556)	(10,156,511)
Operating Segments | Real estate
Segment Reporting Information [Line Items]
Operating Loss	109,354	30,590	(56,833)
Segment Reconciling Items
Segment Reporting Information [Line Items]
Other income (expense), net	$ (2,080,321)	$ (1,698,212)	$ (2,751,360)