Siglo Veinte Mine (Siglo XX Mine; Llallagua Mine; Catavi), Llallagua, Rafael Bustillo Province, Potosí Department, Bolivia

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Apatite-(CaF) : Ca₅[F\|(PO₄)₃]
	Siglo Veinte Mine (Siglo XX Mine; Llallagua Mine; Catavi), Llallagua, Rafael Bustillo Province, Potosí Department, Bolivia 8.5 x 4.0 x 2.5 cm. From the new find in late Fall of 2005. Here is a great, classic locality specimen of Apatite from Bolivia. This small cabinet size piece features a few highly sought after, relatively sharp, pale pink, tabular crystals of Apatite measuring up to 1.6 cm sitting atop Quartz crystals. Matrix Apatite specimens from Siglo XX are ...
© Rob Lavinsky	Photo ID: 157654 View Count: 116
Apatite-(CaF) : Ca₅[F\|(PO₄)₃], Quartz : SiO₂
	Siglo Veinte Mine (Siglo XX Mine; Llallagua Mine; Catavi), Llallagua, Rafael Bustillo Province, Potosí Department, Bolivia 16.0 x 12.8 x 6.4 cm. This is a superb large plate from the classic Bolivian locality. It features a matrix covered by colorless quartz, to 3.6 cm , as the host for tabular, translucent crystals of ivory-colored fluorapatite, to 4.1 cm across. The quartz crystals are peppered with sparkling, splendent sulfide crystals, which may be sphalerite. A ...
© Rob Lavinsky	Photo ID: 171966 View Count: 63
Apatite-(CaF) : Ca₅[F\|(PO₄)₃]
	Siglo Veinte Mine (Siglo XX Mine; Llallagua Mine; Catavi), Llallagua, Rafael Bustillo Province, Potosí Department, Bolivia Apatite crystal cluster. Specimen was from the Contacto Main Vein, Level 295+12M. Such locality information is seldom preserved, but in this case Mark Bandy worked at the mine and collected the specimen. Specimen is from the collection of Mark Bandy. Scale at bottom of image is an inch with a rule at one cm.
	Photo ID: 217377 View Count: 36
Apatite-(CaF) : Ca₅[F\|(PO₄)₃]
	Siglo Veinte Mine (Siglo XX Mine; Llallagua Mine; Catavi), Llallagua, Rafael Bustillo Province, Potosí Department, Bolivia Apatite crystal. Specimen was from the Contacto Main Vein, Level 295+12M. Such locality information is seldom preserved, but in this case Mark Bandy worked at the mine and collected the specimen. Specimen is from the collection of Mark Bandy. Scale at bottom of image is an inch with a rule at one cm.
	Photo ID: 217376 View Count: 28
Apatite-(CaF) : Ca₅[F\|(PO₄)₃]
	Siglo Veinte Mine (Siglo XX Mine; Llallagua Mine; Catavi), Llallagua, Rafael Bustillo Province, Potosí Department, Bolivia A 2.5 cm colorless Apatite crystal, retaining a label from Mark Bandy (author of Minerales de Llallagua) with the vintage blasting cap tin in which it was stored. C. Stefano specimen #3233.
© C. Stefano 2009	Photo ID: 264913 View Count: 12
Arsenopyrite : FeAsS - (Fe_0.90Co_0.10)AsS
	Siglo Veinte Mine (Siglo XX Mine; Llallagua Mine; Catavi), Llallagua, Rafael Bustillo Province, Potosí Department, Bolivia Arsenopyrite. Specimen is from the British Museum of Natural History #1938,423 (1975). Scale at bottom of image is an inch with a rule at one cm.
	Photo ID: 217769 View Count: 43
Bismuth : Bi
	Siglo Veinte Mine (Siglo XX Mine; Llallagua Mine; Catavi), Llallagua, Rafael Bustillo Province, Potosí Department, Bolivia Very nice single crystal with good brassy-gray color, excellent luster and an attractive stepped habit along the main face. Smal,l but super sharp and unusually 3-dimensional. Better in person. 1.1 x .7 x .6 cm
© Rob Lavinsky	Photo ID: 48821 View Count: 381
Bismuth : Bi
	Siglo Veinte Mine (Siglo XX Mine; Llallagua Mine; Catavi), Llallagua, Rafael Bustillo Province, Potosí Department, Bolivia 12.6 x 9.3 x 4.5 cm. This important large, museum-sized specimen has lustrous, brilliantly metallic bismuth crystals exposed in massive ore matrix. The crystals reach 3 cm in size. The left half of the specimen is also crystallized around on the backside as well. Ex. Academy of Natural Sciences Philadelphia Collection.
© Rob Lavinsky	Photo ID: 202121 View Count: 79
Childrenite : (Fe²⁺,Mn²⁺)Al[(OH)₂\|PO₄] · H₂O
	Siglo Veinte Mine (Siglo XX Mine; Llallagua Mine; Catavi), Llallagua, Rafael Bustillo Province, Potosí Department, Bolivia Digital photomicrograph © Saul Krotki 2003 (.0381). From a thumbnail specimen with mostly roughly formed botryoids. Acquired in Bolivia by Alfredo Petrov. This 1.4 mm sphere, protected in a deep vug, shows unusually sharp spear-shaped terminations. Krotki Micromount Collection.
© Saul Krotki 2003	Photo ID: 14271 View Count: 504
Copper : Cu
	Siglo Veinte Mine (Siglo XX Mine; Llallagua Mine; Catavi), Llallagua, Rafael Bustillo Province, Potosí Department, Bolivia VERY RAR E- NATIVE COPPER FORM BOLIVIA! Even aside from the locality value, it is an interesting group of dendritic copper crystals on a massive copper matrix. The crystals appear like pine trees rising from the matrix. A slight coating of oxidation to green gives the specimen a nice aesthetic appeal. Another unique specimen from a very hard to ...
© Rob Lavinsky	Photo ID: 69332 View Count: 251