Cassiterite on Quartz (excellent) Ed David Coll.

Viloco Mine, Loayza Province, La Paz, Bolivia
8.8 x 6.6 x 3.6 cm
Start Time: 09/11/2020 6:30:00 pm (CDT)
End Time: 09/17/2020 6:35:00 pm (CDT)
Auction Closed
Winning Bid: $315
Winning Bidder: markg100

Item Description

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Splendid, sharp, twinned cassiterite crystals are aesthetically set on the sculptural quartz-rich matrix covered with colorless quartz points on this exceptional small cabinet from this famous locale. The highly lustrous striated twins appear brown to black in normal light, but bright lighting or back lighting reveals striking areas of gemmy to translucent yellow to yellow-brown color. The impressive large twin in the 4.5 cm cluster is 2.8 cm and the isolated twin is 1.8 cm long. The famous Viloco Mine has produced the finest quality Bolivian cassiterite specimens and is the only Bolivian tin mine, that produced facet-grade cassiterite. Specimens of this outstanding quality came out in three small batches from 1980 to 1994. They were never common. Ex Ed David Collection. Ed was Science Advisor to President Nixon and assembled several world-class collections before he passed away in 2017.

Bidding History

Bidder Bid Amount Bid Time
markg100 $315 09/17/2020 6:25:18 pm (CDT)
tblackwood1 $305 09/17/2020 5:55:40 pm (CDT)
staurotide $302 09/17/2020 5:55:40 pm (CDT)
staurotide $295 09/17/2020 5:55:35 pm (CDT)
tblackwood1 $285 09/17/2020 5:55:35 pm (CDT)
staurotide $275 09/17/2020 5:10:04 pm (CDT)
tblackwood1 $265 09/17/2020 5:10:04 pm (CDT)
staurotide $255 09/17/2020 5:07:04 pm (CDT)
Minchon68 $245 09/17/2020 5:03:37 pm (CDT)
tblackwood1 $235 09/17/2020 4:37:10 pm (CDT)
tkiy $225 09/17/2020 11:18:33 am (CDT)
Minchon68 $221 09/17/2020 11:18:33 am (CDT)
tkiy $211 09/17/2020 10:30:20 am (CDT)
stoasucha $201 09/17/2020 10:30:20 am (CDT)
stoasucha $195 09/17/2020 12:34:31 am (CDT)
Minchon68 $185 09/16/2020 1:57:07 pm (CDT)
Minchon68* $175 09/16/2020 1:56:48 pm (CDT)
stoasucha* $175 09/16/2020 1:56:48 pm (CDT)
stoasucha $155 09/16/2020 11:42:28 am (CDT)
Minchon68 $145 09/16/2020 11:42:06 am (CDT)
stoasucha $140 09/16/2020 11:42:06 am (CDT)
Minchon68 $130 09/16/2020 11:18:25 am (CDT)
stoasucha $120 09/16/2020 2:36:41 am (CDT)
Minchon68 $110 09/14/2020 4:13:47 pm (CDT)
Minchon68* $100 09/14/2020 4:13:33 pm (CDT)
miksag* $100 09/14/2020 4:13:33 pm (CDT)
miksag $90 09/14/2020 4:13:17 pm (CDT)
Minchon68 $80 09/14/2020 4:13:17 pm (CDT)
miksag $70 09/12/2020 11:23:25 am (CDT)
Mikaurum $60 09/12/2020 11:23:25 am (CDT)
miksag $30 09/12/2020 11:22:56 am (CDT)
Mikaurum $25 09/12/2020 11:22:56 am (CDT)
miksag $20 09/12/2020 11:22:48 am (CDT)
Mikaurum $15 09/12/2020 11:22:47 am (CDT)
miksag $10 09/12/2020 2:39:44 am (CDT)
* Proxy Bid Battle: In the event of two customers inputting matching proxy bids, the leading bid goes to the earliest of the two proxy bids. Tie winners are shown in bold.