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Geoffrey Krasnov's Mindat Home Page

	My Page	My Photos	My Blog	My Articles	My Favourites	My Sponsored Pages	Contact Me

Manganoan Calcite

Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto Region (Oshikoto), Namibia

Geoff Krasnovs Home page

Registered member since 26th Dec 2006

Geoffrey Krasnov has uploaded:
800 Mineral Photos
36 Other Photos

Geoffrey has written 1 blog entry

Geoffrey has published 3 articles on mindat.org

I am a lifetime mineral collector with a fundamental understanding of the processes that form the magnificent minerals that mother earth has gifted to us. I collect calcites and am enamored by the plethora of forms and associations. To support my hobby, I began dealing on the internet and showing at local shows in Pennsylvania. I moved to Wilmington North Carolina in 2007 and now show at the Raleigh, Ashville, Dallas(NC) and Grassy Creek shows under Geokrazy Minerals (as well as on www.e-rocks.com year round). I absolutely love the thrill of the hunt, as I search for great deals on aesthetic specimens for re-sale. Mineral collectors are some of the nicest people on the planet, and I welcome anyone with an interest to visit my collection on their way to the beaches (20 minutes away).

Geoffrey's Favourites

This page lists Geoffrey's favourite minerals, localities, mindat.org members and photos. All lists in alphabetical order.

Favourite Minerals

Calcite

Favourite Localities

Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto Region (Oshikoto), Namibia

Favourite Members' Home Pages

Geoffrey has not added any yet.

Favourite Photos

Calcite : CaCO₃, Malachite : Cu₂(CO₃)(OH)₂
	Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto Region (Oshikoto), Namibia An elongated rhombohedral crystal cyclically twinned with a second generation of druise and a third generation of clear axially oriented growth. A small nodule of malachite at the bottom, but the color appears a bit too blue to be caused by the malachite, so perhaps conichalcite inclusions(?). Anyone with information relative to this find (level, ...
© Geoffrey Krasnov	Photo ID: 262520 View Count: 342
Calcite : CaCO₃, Mottramite : PbCu(VO₄)(OH)
	Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto Region (Oshikoto), Namibia A 24 X 14 X 7.8cm specimen I have dubbed "the boot". A partially hollow solid calcite matrix hosts 4cm lenticulated striated rhombohedrons which are entirely coated on the back and along the fringes with iron oxide (hematite). The hollow portion is fully encrusted with arboreal mottramite, which also underlies the calcites on the front of the ...
© Geoffrey Krasnov	Photo ID: 252814 View Count: 293
Calcite : CaCO₃, Hematite : Fe₂O₃
	Stank Mine, Barrow, South Western Region (Furness), Cumbria, England, UK A specimen that graced the show cases at the 2008 Springfield show and from the Minette collection. 13.7 X 5.5 X 7cm.
© Geoffrey Krasnov	Photo ID: 252813 View Count: 249
Calcite : CaCO₃
	Annabel Lee mine, Harris Creek Sub-District, Illinois - Kentucky Fluorspar District, Hardin Co., Illinois, USA A huge 24cm X 7cm X 14cm cluster of needle like aggregates in divergent sprays. The largest bundle is 12cm. Natural petroleum partially coats the bottom of the specimen.
© Geoffrey Krasnov	Photo ID: 90305 View Count: 534
Calcite (Var: Manganoan Calcite) : (Ca,Mn)CO₃, Limonite : FeO(OH)·nH₂O
	Cavnic Mine (Kapnikbánya), Cavnic (Kapnic; Kapnik), Maramureș Co., Romania A fascinating specimen of mangano calcite with a feathery surface texture. Scalenohedrons are covered by secondary growth rosettes which, in turn, are peppered with thousands of dark brown cubic crystals believed to be pyrite pseudomorphed to limonite. 19cm X 10cm X 8cm
© Geoffrey Krasnov	Photo ID: 89074 View Count: 527
Calcite : CaCO₃, Boulangerite : Pb₅Sb₄S₁₁
	Herja Mine, Chiuzbaia (Kisbánya), Baia Mare (Nagybánya), Maramureș Co., Romania A pristine lenticulated curvilinear rhombohedron with difinitive demarcation line of rich boulangerite inclusion. 4cm X 1.5cm X 4cm
© Geoffrey Krasnov	Photo ID: 88804 View Count: 471
Calcite : CaCO₃
	Ladywash Mine, Eyam, Derbyshire, England, UK A large 14cm X 8cm X 8cm cluster of doubly terminated twinned scalenos. A soft yellow color with the highest level of gemminess. Individual crystals up to 3cm. Ex Phillip Greybill
© Geoffrey Krasnov	Photo ID: 88714 View Count: 513
Calcite : CaCO₃
	Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto Region (Oshikoto), Namibia A large 14cm X 10cm X 7cm cluster of clear centered rhombs with milky white peripheries formed over a first generation hematite coated group of scalenohedrons
© Geoffrey Krasnov	Photo ID: 88490 View Count: 494
Calcite (Var: Manganoan Calcite) : (Ca,Mn)CO₃
	Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto Region (Oshikoto), Namibia A huge 21cm X 12cm X17cm specimen of pink centered multi-generational elongated rhombohedrons up to 17cm in length.
© Geoffrey Krasnov	Photo ID: 86887 View Count: 761

Article Title	Last Revision Date
2009 Asheville Gem and Mineral Show Report	27th Jun 2009
A South African Adventure	27th Jun 2009
How a regular guy became a calcite addict	27th Jan 2008

Geoffrey Krasnov's Photos

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