The New Carbon Minerals

5th February 2016

These are the carbon minerals verified since the launch of the Carbon Mineral Challenge in December 2015.
Last updated 1 December 2016.

1

Abellaite

Abellaite

Date December 2015
Location Eureka mine, Catalonia, Spain
Chemistry NaPb2(CO3)2(OH)
Structure Trigonal: P31c; structure determined
References MINDAT.
Discovery Team
Jordi Ibáñez-Insa*
Josep J. Elvira
Núria Oriols
Xavier Llovet
Joan Viñals
Named in honour of Catalan gemmologist Joan Abella i Creus (born 13 December 1968, Sabadell, Catalonia, Spain) who found the mineral. Cotype material is deposited in the collections of the Natural History Museum of Barcelona, Barcelona, Spain, specimen number MGB 26.350
cmc-predicted-carbon-mineral

2

Tinnunculite

Date December 2015
Location Mt. Rasvumchorr, Kola peninsula,
Russia

Chemistry C5H4N4O3·2H2O
Structure Monoclinic:P21/c
References MINDAT.
Discovery Team
Igor V. Pekov*
Nikita V. Chukanov
Dmitriy I. Belakovskiy
Inna S. Lykova
Vasiliy O. Yapaskurt
Natalia V. Zubkova
Elena P. Shcherbakova
Sergey N. Britvin
Named after the European Falcon (Falco tinnunculus) since the mineral formed as a product of hot gases from burning carbon reacting with excrement from Falco tinnunculus. Type material is deposited in the collections of the Fersman Mineralogical Museum of the Russian Academy of Sciences, Moscow, Russia, registration number 4695/1.

Common kestrel (Falco tinnunculus). Credit

Common kestrel (Falco tinnunculus). Credit Andreas Trepte, www.photo-natur.de

3

Marklite

Marklite

Marklite, credit Mindat.org

Date January 2016
Location Friedrich-Christian mine, Baden-Würtenberg, Germany
Chemistry Cu5(CO3)2(OH)6·6H2O
Structure New structure type Monoclinic: P21/c; structure determined
References MINDAT.
Discovery Team
Jakub Plášil*
Anthony R. Kampf
Melanie Keuper
Radek Škoda
Found in the dumps of the Friedrich-Christian mine, ca. 5 km SW of Schapbach, Wildschapbach valley, Black Forest Mts. (Schwarzwald), Baden-Würtenberg, Germany. Named after Prof. Dr. Gregor Markl, mineralogist at the University of Tübingen, Germany, who found the type specimen of marklite, for his numerous studies and books on crustal petrology, geochemistry and specifically on the hydrothermal ore deposits of the Black Forest area (genesis, oxidative alteration, mineralogy and geochemistry). Type material is deposited in the mineralogical collections of the Eberhard Karls University, Tübingen, Germany, catalogue number 3586 T, and the Natural History Museum of Los Angeles County, Los Angeles, USA, catalogue number 65630.

4

Middlebackite

middlebackite

Groups of middlebackite crystals associated with atacamite on quartz. The field of view is 1.1 mm across. Credit Peter Elliott.

Date April 2016
Location Iron Monarch quarry, South Australia, Australia
Chemistry Cu2C2O4(OH)2
Structure New structure type, Monoclinic: P21/c; structure determined
References MINDAT.
Discovery Team
Peter ElliottSpecimens of middlebackite were recovered by the quarry manager from a single one meter-sized boulder found on RL160, on the southern side of the Iron Monarch quarry, Iron Knob, Middleback Range, Eyre Peninsula, South Australia, Australia in June 1990. The one meter-sized boulder also contained 50 other mineral species. Specimens were forwarded to South Australian Museum for identification in the mid 1990s, but it has only been recently that single-crystal x-ray diffraction using synchrotron radiation has allowed determination of the crystal structure and the complete characterization of the new mineral.Type material is deposited in the mineralogical collections of the South Australian Museum, Adelaide, Australia, registration number G34300.

5

Leószilárdite

Leószilárdite. Photographer Travis Olds.

Leószilárdite. Credit Travis Olds.

Date June 2016
Location Markey Mine, Utah, USA
Chemistry Na6Mg(UO2)2(CO3)6·6H2O
Structure New structure type, Monoclinic: C2/m; structure determined
References MINDAT.
Discovery Team
Travis A. Olds
Luke Sadergaski
Jakub Plášil
Anthony R.Kampf
Peter C. Burns
Ian M.Steele
Joe Marty
Named in honour of Leó Szilárd, Hungarian-born physicist and inventor (1898–1964). It was found in a single area of the Markey Mine, on a seam of C-rich material deposited by an ancient stream. After mining ceased, groundwater ate away at the uraninite ore within this seam and produced abundant U-carbonate secondaries like andersonite, bayleyite, and čejkaite, with very minor leószilárdite. There was only a single specimen with diffraction worthy crystals from that trip (shown in the picture), since the bulk of the mineral occurs as pearlescent masses very thin plates. Type material is deposited in the mineralogical collections of the Natural History Museum of Los Angeles County.

6

Ewingite

Ewingite. Photographer Travis Olds.

Ewingite. Credit Travis Olds.

Date June 2016
Location Plavno Mine, Jáchymov ore district, Western Bohemia,Czech Republic
Chemistry Mg8Ca8(UO2)24(CO3)30O4(OH)12(H2O)138
StructureNew structure type, Tetragonal: I41/acd; structure determined
References MINDAT.
Discovery Team
Travis A. Olds
Jakub Plášil
Anthony R. Kampf
Peter C. Burns
Antonio Simonetti
Luke R.Sadergaski
Ewingite is named in honour of Dr. Rodney C. Ewing, Professor of Geological Sciences, Frank Stanton Professor in Nuclear Security, and Senior Fellow at the Freeman Spogli Institute for International Studies at Stanford University, Stanford, California, USA. Ewingite is currently the most structurally complex mineral known using the information content method given by Krivovichev 20121, at 12230 bits per unit cell. Its rarity appears to be due to a very narrow pH and compositional range during formation that is only found in the Plavno mine. Type material is deposited in the mineralogical collections of the Natural History Museum of Los Angeles County.

1. Krivovichev, S.V. (2012) Topological complexity of crystal structures: Quantitative approach. Acta Crystallographica, A68, 393–398.

7

Braunerite

Date June 2016
Location Svornost Mine, Jáchymov ore district, Western Bohemia,Czech Republic
Chemistry K2Ca(UO2)(CO3)3·6H2O
StructureNew structure type, Monoclinic: P21/c; structure determined
References MINDAT.
Discovery Team
Jakub Plášil*
Kurt Mereiter
Anthony R. Kampf
Jan Hloušek
Radek Škoda
Jiří Čejka
Ivan Němec
Jana Ederová
Type material is deposited in the collections of the Department of Mineralogy and Petrology, National Museum, Prague, Czech Republic, and the mineralogical collections of the Natural History Museum of Los Angeles County.

8

Parisite-(La)

Parisite-(La). RRUFF Database.

Parisite-(La). RRUFF Database.

Date August 2016
Location Mula mine, Tapera village, Novo Horizonte,
Bahia, Brazil

Chemistry CaLa2(CO3)3F2
StructureNew structure type, Monoclinic: P21/c; structure determined
References MINDAT.
Discovery Team
Daniel Atencio*
Luiz A.D. Menezes Filho
Mario L.S.C. Chaves
Nikita V. Chukanov
Ricardo Scholz
Igor Pekov
Geraldo Magela da Costa
Shaunna M. Morrison
Marcelo Andrade
Erico Freitas
Robert T. Downs
Dmitriy I. Belakovskiy
Type material is deposited in the mineralogical collections of the Museu de Ciência e Técnica, Escola de Minas, Universidade Federal de Ouro Preto, Praça Tiradentes, Centro, Brazil, registration and at the University of Arizona Mineral Museum, Tucson, AZ.
cmc-predicted-carbon-mineral