5. Other Assets	3 Months Ended
Mar. 31, 2013
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Other Assets	Soyatal At December 31, 2012, we exercised our option to purchase the Soyatal mining property (“Soyatal”), consisting of 283 hectares, for $1,267,431. We were obligated to make a $200,000 down payment by December 31, 2012, of which $92,000 was paid at that time. During the quarter ended March 31, 2013 we paid an additional $9,395 on the remaining $108,000 payment due to Soyatal. At March 31, we owe Soyatal approximately $99,000 for the down payment. We are also obligated to make payments of $200,000 annually through 2018, and a final payment of $100,000 is due in 2019. This obligation is recorded in long-term debt. We have credits of approximately $372,000 recorded in other assets at March 31, 2013, for advances to the previous Soyatal operator which can be used as a payment on our debt at a rate of $100,000 per year, or offset from future ore purchase payments which may become due to Soyatal. Guadalupe In March of 2012 we entered into a supply agreement with Grupo Roga or “Guadalupe” for antimony ore. As of March 31, 2013 we had received approximately 24 metric tons of antimony ore under this agreement. In 2012 and 2013 we made advances to Guadalupe to fund their antimony mining operations. The mining, trucking, and milling costs on this ore have exceeded its value by approximately $247,000. As Guadalupe has agreed to deduct these excess costs through future antimony ore purchases and (or) option payments for the Guadalupe property, we have recorded the excess costs as other assets at March 31, 2013.

5. Other Assets

3 Months Ended

Mar. 31, 2013

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Soyatal

At December 31, 2012, we exercised our option to purchase the Soyatal mining property (“Soyatal”), consisting of 283 hectares, for $1,267,431. We were obligated to make a $200,000 down payment by December 31, 2012, of which $92,000 was paid at that time. During the quarter ended March 31, 2013 we paid an additional $9,395 on the remaining $108,000 payment due to Soyatal. At March 31, we owe Soyatal approximately $99,000 for the down payment.

We are also obligated to make payments of $200,000 annually through 2018, and a final payment of $100,000 is due in 2019. This obligation is recorded in long-term debt.

We have credits of approximately $372,000 recorded in other assets at March 31, 2013, for advances to the previous Soyatal operator which can be used as a payment on our debt at a rate of $100,000 per year, or offset from future ore purchase payments which may become due to Soyatal.

Guadalupe

In March of 2012 we entered into a supply agreement with Grupo Roga or “Guadalupe” for antimony ore. As of March 31, 2013 we had received approximately 24 metric tons of antimony ore under this agreement. In 2012 and 2013 we made advances to Guadalupe to fund their antimony mining operations. The mining, trucking, and milling costs on this ore have exceeded its value by approximately $247,000. As Guadalupe has agreed to deduct these excess costs through future antimony ore purchases and (or) option payments for the Guadalupe property, we have recorded the excess costs as other assets at March 31, 2013.