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本帖最后由 德道 于 2010-10-30 22:21 编辑
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2 I. X( s8 u7 Z; x0 q- l$ GBurmite or Burmese amber has been known since the distance past. This amber is from the Hukawng Valley in Kachin
$ u. X0 Q& H# |! U) [State the northenmost state in the union of Myanmar formally known as Burma . According to ancient Chinese sources
s( [3 e8 }8 ?! T' l& L8 pamber from the Hukawng Valley was mined as early as the first century AD and shipped to Yannan Province in China . 1 o% b5 d$ Y1 ]) A3 b) K
From there, burmite may have found its way along the Silk Road as far west as the Roman Empire , where amber was
+ B6 ]% S3 b) N/ W/ r# Ohighly prized. It is said that that a good piece of amber was worth the price of a slave. The oldest written record referring
# F0 n" v# w& [$ T8 d, y Q, `to Burmese amber was in the Annals of the Han Dynasty (205-265 AD). Thus, burmite has been known for about two * H6 [6 g! H3 k5 @5 d! g
thousand years. Much of the exquisitely carved Chinese amber has its origin in the Hukwang Valley . Amber was also
% E0 E+ F* Y; f$ ~used and is still used in Chinese medicine.
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The first mention of burmite in the western world by a European was by a Portuguese Jesuit Missionary Father Alvarez " D, H5 k2 J: G9 U
Semedo in 1655. He noted that red amber from Yunnan Province in China . In 1738, there is another brief reference to
" o+ j3 p, n* Q$ a& Hred amber from Yunnan Province by Du Halde. " J+ H' o) v) T& j7 h& {
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In the 19th Century, there were a series of reports about the location and mining of Burmese amber By Brester (1835)
, m( c4 }+ e5 E) h1 P7 l8 _and Pemberton (1837). Captain S. F. Hannan was the first westerner to visit the amber mines in the Hukong (Hukawng) " z0 r: d; k8 C8 s
Valley. He described the primitive mining method utilized by the miners to recover amber consisting of digging shallow 9 j: i- s9 }* h+ p) k1 t9 ?
pits with sharpened bamboo and wooden shovels. Description of the amber mines was given by Griffith in 1848 from the ; Q4 B. y4 J" _; ~) U0 j' {2 W
“Hookhoom” Valley. Some pits, he observed were up to forth feet deep. 6 Y! L- J {- d/ u9 M6 I
9 M& m2 ?, z: [+ ~- Z4 q, U) bIn 1885, the British invaded and conquered Upper Burma deposing and sent into exile the Burmese Royal Family to
7 G8 F, f# r) F5 R7 a) i) VIndia . Burma became an annex of India . With the arrival of the British the main trading route in amber went south to
" G$ f4 n" k. b+ Z5 c8 O' D. @Mandalay rather than to China . The Geological Survey of India sent Dr. Fritz Noetling to evaluate the resources of
: u8 l/ S2 a+ _8 z, x" b6 E% Y+ Inorthern Burma in 1892. Amber recovered from the Hukwang Valley was examined by Otto Helm who gave the name
2 e& u. A2 Y4 |* u9 u" _8 O! Gburmite to the amber from that area. Noetling also noted the presence of insects in amber thought to be from the area in ' D8 Q5 H( p1 l
1893. ( Y o% s5 r! `6 Z0 K) I) ^$ s: l: @: Y
# r9 x& c, F) r( d9 U, I" K5 wIn the first half of the twentieth century, scientific study and production continues until 1939. With the advent of the
n; o( B" J) D8 n; E& I, K, t8 DSecond World War, both the production and study languished until the 1990’s. This was due not only to the war but also ! {, j; s; [. o4 O) A- ?
internal turmoil within Burma following its independence from Britain in 1947.
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Cockerell (1917) published the first scientific paper on insect inclusions in burmite. He considered burmite to be possibly
4 C5 ~4 U; W2 Y3 X! i( PUpper Cretaceous in age. The Indian Geological Survey published yearly production figures from the Myitkyina District
* e' U& B& E8 m6 N9 Sfrom 1898 until 1940. During this period a total of approximately 82,656 kilograms of amber were produced from the % ]8 B! o4 }: t
Hukawng Valley . Scientific papers during this period include work by Stuart (1922), Cocherell (1922), Williamson 5 h! M* V& X5 e9 \. x7 k
(1932), and Chibber (1934). These authors concluded that the age of burmite was Eocene or about the same age as % q1 H3 r; _6 F" L) ^6 a/ G
Baltic amber. This interpretation was based on a single observation of limestone debris dug from one of the amber pits. 7 Z5 P- V3 F4 i9 \
Chibber (1934) contains the most detailed report of the amber mines in the Hukawng Valley during this period.
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/ b$ b0 H$ Y, UDuring the Second World War there was much fighting in the Hukwang Valley between the advancing allies and the 1 G9 d9 d: {- |
Japanese Army culminating in the fierce battle for Myitkyina the capital of Kachin State in 1944. The war also saw the
+ m% W( u( O" a. d4 B4 {3 a- {construction of the Ledo Road through the Hukwang Valley from Ledo in India to Mytiknina to Lashio where it connected 6 _- e8 x% t! C/ C! K3 l
up with the Burma Road to China . This road provided a back door to supply China with desperately needed war - Z8 n: B4 G2 ]7 T: V1 `
material. - }; k2 Y ^5 b Y9 z- Z4 o
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Since independence, Burma has been racked by internal insurgencies including fighting between the Kachin
5 x; v: {; f! p) o/ D; p6 rIndependence Army (KIA) and the government. It was not until the 1990’s that a peace treaty was signed and limited
- l( O; ? |# E! E' Z% t5 Q5 }9 Waccess to the amber mine was possible. In 1989, the county was renamed Myanmar , which was the original Burmese 5 U7 h/ t8 F* Z
name of the country.
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' V" h) m8 a3 A0 l7 x7 X1 WSince the beginning of the Second World War until recently there was been a sixty year hiatus in production. Dr. David ( }2 l, P d" y
Grimaldi comments in his book on amber published in 1996, “Today, burmite has almost legendary appeal, in part
* [+ Q! D1 X. g' s2 ^) w' [because the deposits are no longer mined and the supply is generally not available.”
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Leeward Capital Corp., a Canadian Mining company began exploration in 1996 in northern Kachin State for gold and 0 @* h% b3 V( O% M6 ^0 J
platinum. With the collapse of the junior mining market due to the Bre-X Scandal in Indonesia and the drop in the gold
8 g9 f- t, X0 ^* Y* o, } |$ y9 B, aprice, this exploration ceased due to the lack of funding. In 1999, Leeward began to evaluate the possibility of reopening
: N H- {% C h7 v" D" {/ Gthe amber mines in the Hukwang Valley . Limited production was achieved in 2000, and is currently about 500 kg per i/ s+ Y" L) p6 J. ] A
year. The initial 100 kg gathered in the first two years was sent to Dr. Grimaldi at the American Museum of Natural * N; z4 n/ ^7 B% W% V! M, I( D' Y
History in New York for scientific study. In 2000, Zherikjin and Ross of the Natural History Museum , London published a ) j9 m j) z6 V% k
scientific paper on burmite in which they determined a Cretaceous age for burmite. Grimaldi et al (2002) published a
t: i4 o1 y2 H; gscientific paper confirming the age of burmite as Cretaceous. Also in 2002, Cruichshank and U Ko Ko published a
; m9 a7 h, S) Y0 @description of the amber mines in the Hukwang Valley giving the amber a an Albian or uppermost Lower Cretaceous - r# S" J" C% x) y
age. This dates burmite as at between 100,000,000 and 110,000,000 years old. Burmite is thus the oldest locality from ) O; g1 u' l! q( S, s- i0 M
which commercial deposits of amber can be mined. Leeward remains the sole exporter of this rare and precious amber. 3 \. Z% y1 o' |2 S2 u$ a
. g4 |6 ]" Y d8 LSince scientific study of burmite began, there have been numerous scientific papers on the unique biota found in 0 M, K% q3 V9 H% X5 b0 `
burmite. This book illustrates the diversity of animal and plant life preserved in this ancient amber.
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