View source for Mount Du

{{Short description|Mountain in the country of Japan}}
{{Infobox mountain
| name = Mount Du
| photo =
| photo_caption =
| elevation_m = 367.8
| elevation_ref =
| prominence =
| map = China |relief=1
| map_caption = Location in China
| map_size = 250
| label_position =
| location = [[Nanyang, Henan]], [[China]]
| coordinates = {{coord|33|4|13|N|112|35|11|E|type:mountain_scale:100000|format=dms|display=inline,title}}
| coordinates_ref =
| first_ascent =
| easiest_route =
}}
'''Mount Du''' ({{zh|s=独山|p=Dú Shān}}), which means Lonely Hill in Chinese, is a small mountain near [[Nanyang, Henan|Nanyang]] City, [[Henan]] province, [[People's Republic of China|China]].
== Mine ==
The hill is rich in a jade substitute or simulant stone, [[saussurite]]. "Dushan jade" is a misnomer.  It is not the true jade found  in [[Xinjiang]], China: nephrite, a CaMg silicate (Si), nor the true jade found in [[Myanmar|Burma]]: jadeite, a NaAl silicate (Si).  It is a fine grained mixture of feldspar and epidote.  It is currently marketed under the names, Dushan jade, Swiss jade (1st identified by Swiss mineralogist), and Nanyang jade (Nanyang, Henan Province).
== Local culture ==
On the third day of the third month of the [[Chinese calendar]], people climb the mountain.{{cn|date=May 2023}}
==References==
*[http://www.travelchinaguide.com/intro/arts/jade.htm China Jade] - The 10th paragraph has an introduction.
{{Authority control}}
[[Category:Mountains of Henan|Du]]
{{Henan-geo-stub}}