Field Trip

Inner Mongolia Autonomous Region:

Inner Mongolia Autonomous Region is located in northern China (Fig. 1), bordering the countries of Mongolia and Russia. It is 2400-km long (N-S) and 1700 km wide (W-E), covering an area of 1.183 million km2, and accounting for 12.3% of the total China land area. 


Figure 1. Location of Inner Mongolia of China

Xilinhot City:

Xilinhot is a county-level city which serves as the seat of government for the Xilin Gol league in Inner Mongolia, China. It has a jurisdiction area of 14,785 km2, and a population of 245886, with 149000 being in the Xilinhot urban area. 

The elevation of the city is about 990 metres (3,250 ft) and is 610 km from Beijing. The historic centre includes an artistic temple. The Naadam Festival, a Mongolian feast, is celebrated here every year. Naadam is a gathering of the Mongolian people for wrestling, horse trading, costume contests, horse racing, etc. It's their summer festival and is generally very colorful with costumes and colorful yurts set up to serve food and sell trinkets and supplies. 

Mongolian culture is very prominent with pictures, tapestries and monumental statues of Genghis Khan in every home, shop and street corner. Tourists can stay at nearby yurt resorts where there is a large yurt for dining surrounded by smaller individual yurts for sleeping. The surrounding countryside is rolling grasslands populated by Mongolians who have horses, sheep, goats and some cows. Meals consisted of mutton, beef, cabbages, and other fruit and vegetables.

Wulantuga Coal-hosted Ge ore deposit:

The Early Cretaceous Wulantuga high-Ge coal deposit in the Shengli Coalfield, Inner Mongolia, northern China, is one of the major coal-hosted Ge deposits in the world. The Shengli coalfield is 45 km long and 7.6 km wide, with a total area of 342 km2 (Fig. 2); However, the Wulantuga coal-hosted Ge deposit only covers an area of 2.2 km2 within this coalfield (Fig. 2). It is estimated that about 1700 t of metallic Ge could be extracted from this coal, which makes it a superlarge Ge ore deposit. 

The high-Ge No. 6 Coal (Fig. 3) in this deposit has a low rank (Ro,max=0.45%) and is a low-ash coal (8.77%). The Ge content in the coal is 274 μg/g on average (from 51.3 to1170 μg/g). The Ge content in the fly ashes from the baghouse-filter and from electrostatic precipitator is 14870 μg/g and 4730 μg/g, respectively. High-purity Ge metal has been extracted from coal ash (Fig. 4-5).


Figure 2 Locations of the Shengli Coafield and the Wulantuga Ge ore deposit (from Dai et al., 2012)


Figure 3. The high-Ge No. 6 Coal Seam (photo by Shifeng Dai)


  Figure 4. The high-purity Ge Extracted from high Ge-fly ash (from Shifeng Dai) 


 Figure 4. The high-purity Ge Extracted from  high Ge-fly ash (photo by Shifeng Dai)   

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 Figure 5. The Ge Extraction Factory (from Shifeng Dai)    Figure6. Beizi Temple (from Shifeng Dai)


Figure 7. The Nine-Cylinders River  (from Jihua Sun)        Figure 8. Mesa Mountain (from Jihua Sun)        

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