Luc Yen
Encyclopedia
Lục Yên is a rural district
Districts of Vietnam
||The provinces of Vietnam are divided into counties , provincial cities , and county-level towns .The centrally-controlled municipalities are subdivided into rural counties , county-level towns , and urban districts , which then subdivided into wards ....

 (huyện) of Yen Bai province
Yen Bai Province
Yên Bái is an agricultural-based province located in Tay Bac, the northern part of northern-central Vietnam. It shares borders with five provinces which are Lao Cai province, Lai Chau province, Son La province, Tuyen Quang province, and Phu Tho province...

, in the northeastern
Dong Bac
The Northeast is the region at the north of the Red River Delta, Vietnam. Northeast called to distinguish them from the Northwest, but it's actually in the north and northeast of Hanoi, wider than Việt Bắc. The northeast is one of three sub-regions of northern Vietnam...

 region of Vietnam
Vietnam
Vietnam – sometimes spelled Viet Nam , officially the Socialist Republic of Vietnam – is the easternmost country on the Indochina Peninsula in Southeast Asia. It is bordered by China to the north, Laos to the northwest, Cambodia to the southwest, and the South China Sea –...

. As of 2003 the district had a population of 100,785. The district covers an area of 811 km². The district capital lies at Yen The
Yen The
Yên Thế is a rural district of Bac Giang province in the northeast region of Vietnam. As of 2003 the district had a population of 91,934. The district covers an area of 301 km2. The district capital lies at Bo Ha. This is the homeland of Struggle of Yên Thế's farmers...

. Numerous quarries in the district produce gemstones such as rubies, spinel
Spinel
Spinel is the magnesium aluminium member of the larger spinel group of minerals. It has the formula MgAl2O4. Balas ruby is an old name for a rose-tinted variety.-Spinel group:...

, and tourmaline
Tourmaline
Tourmaline is a crystal boron silicate mineral compounded with elements such as aluminium, iron, magnesium, sodium, lithium, or potassium. Tourmaline is classified as a semi-precious stone and the gem comes in a wide variety of colors...

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