Dr. Ralf Tappert's Publications List

Geodynamic control of atmospheric oxygen over the Phanerozoic Eon

2016-06-22T21:32:49Z

Tappert, R., Muehlenbachs, K., Wolfe, A.P., McKellar, R.C., Schoell, M. (submitted) :

Kimberlites in South Australia provide insights into the compositional evolution and the emplacement controls of kimberlites at a craton margin

2016-06-22T21:27:50Z

Tappert, R., Foden, J., Tappert, M.C., Zurevinski, S.E., Heaman, L., Wills, K. (submitted) :

Deuterium exchangeability in modern and fossil plant resins

2016-06-22T21:31:03Z

González-Arismendi, G., Tappert, R., McKellar, R.C., Wolfe, A.P., Muehlenbachs, K. (submitted) :

Bitterfeld amber is not Baltic amber: Three geochemical tests and further constraints on the botanical affinities of succinite

2016-06-22T21:21:29Z

Baltic and Bitterfeld ambers are important deposits of polymerized conifer resin that are widely recognized for their exquisite fossil inclusions, especially insects. Because of over-arching similarities with respect to visual appearance, organic geochemistry, arthropod assemblages, and proximity to forests of the Paleogene North Sea margin, these two ambers have not yet been differentiated defini...

Wolfe, A.P., McKellar, R.C., Tappert, R., Sodhi, R.N.S., Muehlenbachs, K. (2016) Review of Palaeobotany and Palynology 225: 21-32

Water-gas shift and methane reactivity on reducible perovskite-type oxides

2015-07-11T04:28:10Z

R Thalinger, A K Opitz, S Kogler, M Heggen, D Stroppa, D Schmidmair, R Tappert, J Fleig, B Klötzer, S Penner (2015) The Journal of Physical Chemistry C 119: 11739-11753

Characterizing kimberlite dilution by crustal rocks at the Snap Lake diamond mine (NT, Canada) using SWIR (1.90-2.36 µm) and LWIR (8.1-11.1 µm) hyperspectral imagery collected from drill core

2015-07-19T04:38:40Z

Short-wave infrared (SWIR, 1.90–2.36 μm) and long-wave infrared (LWIR, 8.1–11.1 μm) hyperspectral images collected using the SisuROCK system were used to develop an automated methodology for generating kimberlite dilution maps. Smoothed and denoised images from two Snap Lake (Northwest Territories, Canada) kimberlite drill cores were processed, and SWIR and LWIR spectral endmembers were extr...

Tappert, M.C., Rivard, B., Rogge, D., Fulop, A., Feng, J., Tappert, R., Stalder, R. (2015) Economic Geology 110: 6 1375–1387

Application of mid-infrared (MIR) microscopic imaging for the discrimination between follicular hyperplasia and follicular lymphoma in transgenic mice

2016-06-22T21:10:40Z

Mid-infrared (MIR) microscopy imaging is a vibrational spectroscopic technique that uses infrared radiation to image molecules of interest in thin tissue sections. A major advantage of this technology is the acquisition of local molecular expression profiles, while maintaining the topographic integrity of the tissue. Therefore, this technology has become an essential tool for the detection and cha...

C Wöss, M Drach, A Villunger, R Tappert, R Stalder, JD Pallua (2015) Analyst 140: 18 6363-6372

The future of automated drill core logging: Characterizing kimberlite dilution by crustal material at the Snap Lake diamond mine (NT, Canada) using SWIR (1.90-2.36 µm) and LWIR (8.1-11.1 µm) hyperspectral imagery

2014-11-09T01:19:35Z

To develop an automated method for generating predictive crustal dilution maps for kimberlites, short-wave infrared (SWIR, 1.90-2.36 µm) and long-wave infrared (LWIR, 8.1-11.1 µm) hyperspectral images were collected from two drill cores from the Snap Lake diamond mine (NT, Canada) using the SisuROCK system. The images were processed using continuous wavelets analysis to isolate mineral spectral ...

Tappert, M.C., Rivard, B., Rogge, D., Fulop, A., Feng, J., Tappert, R., Stalder, R. (2014) GSA 2014 Abstracts

Amber associated with Late Cretaceous bonebeds in Western Canada

2014-11-09T01:14:07Z

The first report of inclusion-bearing amber in direct association with a dinosaur bonebed was made in 2004. Subsequently, a range of fossil deposits within the Late Cretaceous strata of Alberta and Saskatchewan have been found to contain at least trace amounts of amber. Improvements in processing techniques have allowed us to examine many of these ambers for inclusions, in addition to conducting b...

McKellar, R.C., Engel, M.S., Tappert, R., Wolfe, A.P., Tappert, M.C., Muehlenbachs, K. (2014) GSA 2014 Abstracts

Corrigendum to ‘Stable carbon isotopes of C3 plant resins and ambers record changes in atmospheric oxygen since the Triassic’ [Geochim. Cosmochim. Acta 121 (2013) 240–262]

2015-07-11T04:28:44Z

R Tappert, R C McKellar, A P Wolfe, M C Tappert, J Ortega-Blanco, K Muehlenbachs (2014) Geochimica et Cosmochimica Acta 128: 278–279

Using modern insects and resins to reveal ecological details in ancient amber deposits

2014-11-09T01:22:42Z

Many of the groups of insects that characterize modern ecosystems began their rise to dominance in the Cretaceous, around the same time that amber deposits start to become more abundant within the rock record. At the family level, analogies can be drawn between amber-entombed insects and their modern descendants, permitting some ecological inferences in deep time. Instances where groups of insects...

McKellar, R.C., Engel, M.S., Tappert, R., Wolfe, A.P., Tappert, M.C., Muehlenbachs, K. (2014) GAS 2014 Abstracts

δ13C of terrestrial organic matter as a proxy for atmospheric oxygen in the Phanerozoic

2014-11-09T22:04:58Z

The carbon isotope composition (δ13C) of terrestrial organic carbon varied considerably throughout the Phanerozoic. These variations primarily reflect changes in 13C-fractionation during photosynthesis by C3 plants—the main contributors to terrestrial organic matter—and this is in part linked to changes in atmospheric composition. We reconstructed the partial pressure of atmospheric oxygen (p...

Muehlenbachs, K., Tappert, R.McKellar, R.C., Wolfe, A.P., Tappert, M.C., Schoell, M. (2014) GSA 2014 Abstracts

Anomalous thermal expansion behavior of quartz and calcite

2014-11-09T22:15:55Z

Mirwald, P.W., Tappert, R., Stalder, R. (2014) 21st General Meeting of the International Mineralogical Association (IMA) - Abstracts

The mineral chemistry, near-infrared, and mid-infrared reflectance spectroscopy of phengite from the Olympic Dam IOCG deposit, South Australia

2013-09-09T09:14:48Z

Phengite is the main potassic dioctahedral mica identified at the Olympic Dam iron oxide–copper–gold (IOCG) deposit, South Australia, where its mineral chemistry is quite variable. These differences can be explained by contrasting degrees of hydrothermal alteration. In the heavily-sericitized, ore-bearing rocks, the phengites display a lower-Si content, a higher-Al content, and a lower Mg-numb...

Tappert, M.C., Rivard, B., Giles, D., Tappert, R., Mauger, A. (2013) Ore Geology Reviews 53: 26-38

Stable carbon isotopes of C3 plant resins and ambers record changes in atmospheric oxygen since the Triassic

2015-07-11T04:14:36Z

Estimating the partial pressure of atmospheric oxygen (pO2) in the geological past has been challenging because of the lack of reliable proxies. Here we develop a technique to estimate paleo-pO2 using the stable carbon isotope composition (δ13C) of plant resins—including amber, copal, and resinite—from a wide range of localities and ages (Triassic to modern). Plant resins are particularly sui...

Tappert, R., McKellar, R.C., Wolfe, A.P., Tappert, M.C., Ortega-Blanco, J., Muehlenbachs, K. (2013) Geochimica et Cosmochimica Acta 121: 240-262

Occurrence of nephrolithiasis in a population of longsnout seahorse, Hippocampus reidi Ginsburg, and analysis of a nephrolith

2015-07-11T04:14:09Z

Lewisch, E., Kucera, M., Tappert, R., Tappert, M., Tessadri, R., Kanz, F. (2013) Journal of Fish Diseases 36: 2 163-167

Na Duong (northern Vietnam) – an exceptional window into Eocene ecosystems from Southeast Asia

2014-11-08T23:19:35Z

Today, the continental ecosystems of Southeast Asia represent a global biodiversity hotspot. From a deep-time perspective, however, very little is known about the formation of this hotspot. In particular, the evolutionary and biogeographic roots of numerous terrestrial biota are unknown, and ecosystemic information, especially for the Paleogene, is unavailable. The Na Duong Basin in northern Vietn...

Böhme, M., Aiglstorfer, M., Antoine, P.-O., Appel, E., Havlik, P., Métais, G., The Phuc, L., Schneider, S., Setzer, F., Tappert, R., Ngoc Tran, D., Uhl, D., and Prieto, J. (2013) Zitteliana A53: 121-167

The use of the δ13C of fossil resins as proxy for changes in atmospheric pO2

2013-09-04T18:48:05Z

R. Tappert, R. C.McKellar, A. P. Wolfe, M. C. Tappert, K. Muehlenbachs (2013) Conference on Isotopes of Carbon, Water, and Geotracers in Paleoclimate Research , Page 71.

Using reflectance spectroscopy to estimate the orientation of quartz crystals in rocks

2014-11-08T23:24:05Z

Quartz is an anisotropic mineral, and each mid-infrared (7–15 μm) reflectance spectrum collected from an individual quartz crystal is strongly influenced by its orientation. As a result, quartz reflectance spectra contain features that systematically change with orientation. In this study, the trough at 8.63 μm was used to derive crystal orientation information from quartz reflectance spectra ...

Tappert, M.C., Rivard, B., Tappert, R., and Feng, J. (2013) Canadian Mineralogist 51: 405-413

Deuterium isotopic exchangeability of resins and amber under hydrous conditions at 55 and 90°C

2012-05-04T12:31:08Z

Gonzales, G., Tappert, R., Wolfe, A.P., Muehlenbachs, K. (2012)

Pristine Early Eocene wood buried deeply in kimberlite from Northern Canada

2012-09-29T17:15:35Z

We report exceptional preservation of fossil wood buried deeply in a kimberlite pipe that intruded northwestern Canada’s Slave Province 53.3±0.6 million years ago (Ma), revealed during excavation of diamond source rock. The wood originated from forest surrounding the eruption zone and collapsed into the diatreme before resettling in volcaniclastic kimberlite to depths >300 m, where it was mummi...

Wolfe, A.P., Csank, A.Z., Reyes, A.V., McKellar, R.C., Tappert, R., Muehlenbachs, K. (2012) PLoS One 7: 9 e45537

Garnet peridotite xenoliths and xenocrysts from the Monk Hill kimberlite, South Australia: Insights into the lithospheric mantle beneath the Adelaide Fold Belt

2015-07-11T04:09:54Z

A total of 73 peridotitic mantle xenoliths and a set of garnet and clinopyroxene xenocrysts from the recently discovered Jurassic Monk Hill kimberlite (UCO-H77A) in South Australia were used to constrain the thermal and compositional structure of the lithospheric mantle beneath the Adelaide Fold Belt, which is located at the southeastern margin of the Australian craton. The xenoliths contain mostl...

Tappert, R., Foden, J., Muehlenbachs, K. and Wills, K. (2011) Journal of Petrology 52: 10 1987-2008

Diamonds in Nature - A Guide to Rough Diamonds

2016-06-22T21:12:00Z

Tappert R, Tappert M C (2011) :

Characterizing modern and fossil exudates of gymnosperms using micro-Fourier transform infrared spectroscopy

2015-07-11T04:06:09Z

Infrared absorption spectra of exudates from 65 species of gymnosperms were measured using micro– Fourier transform infrared (FTIR) spectroscopy. On the basis of the infrared spectra, three compositionally distinct groups of exudates can be distinguished: resins, volatile-rich resins, and gums. Resins and volatile-rich resins are mainly composed of terpenoids, whereas gums are polysaccharides...

Tappert, R., Wolfe, A. P., McKellar, R.C., Tappert, M., Muehlenbachs, K. (2011) International Journal of Plant Sciences 172: 1 120–138

Insect outbreaks produce distinctive carbon isotope signatures in defensive resins and fossiliferous ambers

2015-07-11T04:12:48Z

Despite centuries of research addressing amber and its various inclusions, relatively little is known about the specific events having stimulated the production of geologically relevant volumes of plant resin, ultimately yielding amber deposits. Although numerous hypotheses have invoked the role of insects, to date these have proven difficult to test. Here, we use the current mountain pine beetle ...

McKellar, R.C., Wolfe, A.P., Muehlenbachs, K., Tappert, R., Engel, M.S., Cheng, T., Sanchez-Azofeifa, G. A. (2011) Proceedings of the Royal Society B-Biological Sciences 278: 1722 3219-3224

Automated drill core logging using visible and near-infrared reflectance spectroscopy: a case study from the Olympic Dam IOCG deposit, South Australia

2015-07-11T04:06:34Z

Tappert, M.C., Rivard, B., Giles, D., Tappert, R. and Mauger, A. (2011) Economic Geology 106: 289-296

Stable carbon and hydrogen isotopes from cupressaceous resins reveal arctic climate instability during the Middle Eocene.

2010-09-29T01:15:49Z

Wolfe, A.P., Tappert, R., McKellar, R.C. and Muehlenbachs, K. (2010) Abstract Volume, 8th European Palaeobotany - Palynology Conference, Budapest, Hungary

Oxygen fugacities determined from iron oxidation state in natural (Mg,Fe)O ferropericlase: new insights into lower mantle diamond formation.

2010-09-29T01:30:10Z

Longo, M., McCammon, C., Bulanova, G., Kaminsky, F. and Tappert, R. (2010) Geophysical Research Abstracts, Vol. 12, EGU2010-13549

A new proposal concerning the botanical origin of Baltic amber

2011-01-16T22:08:23Z

Baltic amber constitutes the largest known deposit of fossil plant resin and the richest repository of fossil insects of any age. Despite a remarkable legacy of archaeological, geochemical and palaeobiological investigation, the botanical origin of this exceptional resource remains controversial. Here, we use taxonomically explicit applications of solid-state Fourier-transform infrared (FTIR) micr...

A P Wolfe, R Tappert, K Muehlenbachs, M Boudreau, R C McKellar, J F Basinger, A Garrett (2009) Proceedings of the Royal Society B-Biological Sciences ://000269241300003 276: 1672 3403-3412

Deep mantle diamonds from South Australia : A record of Pacific subduction at the Gondwanan margin

2015-07-11T04:05:25Z

Diamonds from Jurassic kimberlites at Eurelia, South Australia, contain coexisting inclusions of ferropericlase and MgSi-perovskite that provide evidence for their deep (> 670 km) lower mantle origin. Eurelia diamonds formed from mixed carbon sources, likely including subducted carbonate, as indicated by a trend toward isotopically heavy carbon compositions (delta C-13 = 0 parts per thousand) and ...

R Tappert, J Foden, T Stachel, K Muehlenbachs, M Tappert, K Wills (2009) Geology ://000262428200011 37: 1 43-46

The petrology of kimberlites in South Australia.

2010-09-29T01:28:48Z

Tappert, R., Foden, J. and Wills, K. (2009) Geochimica et Cosmochimica Acta 73(13), A1315

The diamonds of South Australia

2015-07-11T04:04:48Z

Diamonds in South Australia occur in kimberlites at Eurelia (Orroroo), and in placer deposits, which include the Springfield Basin and the historic Echunga goldfield. To identify the kimberlitic and mantle sources of the placer diamonds, and to determine any possible connections between the placer diamonds and the diamonds from the Eurelia kimberlites, we examined the physical and compositional ch...

R Tappert, J Foden, T Stachel, K Muehlenbachs, M Tappert, K Wills (2009) Lithos ://000273256800020 112: 806-821

The mineralogy of the Yaringie Hill meteorite-A new H5 chondrite from South Australia

2015-07-11T04:04:08Z

The Yaringie Hill meteorite is a new H5 ordinary chondrite found in the Gawler Ranges, South Australia. The meteorite, which shows only minor signs of terrestrial weathering, is predominantly composed of olivine (Fa(17.2)), orthopyroxene (Fs(15.1)Wo(1.1)), and three distinct phases of nickeliferous iron metal (kamacite, taenite, tetrataenite). Other minerals include troilite, plagioclase (Ab(81)An...

R Tappert, J Foden, A Pring (2009) Meteoritics & Planetary Science ://000273601100001 44: 11 1687-1693

The future of core logging: The reflectance spectroscopy of hematite and micas from the IOCG deposit at Olympic Dam, South Australia.

2010-09-29T01:14:01Z

Tappert, M., Rivard, B., Tappert, R. and Giles, D. (2009) Abstract Volume, Geoscience Forum, Yellowknife, Canada

Characterizing and correlating Cretaceous ‘Canadian amber’.

2010-09-29T01:08:20Z

R C McKellar, A P Wolfe, R Tappert, K Muehlenbachs (2008) 18th Canadian Palaeontology Conference Proceedings 6, 43

Correlation of Grassy Lake and Cedar Lake ambers using infrared spectroscopy, stable isotopes, and palaeoentomology

2011-01-16T22:08:46Z

The Late Cretaceous Grassy Lake and Cedar Lake amber deposits of western Canada are among North America's most famous amber-producing localities. Although it has been suggested for over a century that Cedar Lake amber from western Manitoba may be a secondary deposit having originated from strata in Alberta, this hypothesis has not been tested explicitly using geochemical fingerprinting coupled to ...

R C McKellar, A P Wolfe, R Tappert, K Muehlenbachs (2008) Canadian Journal of Earth Sciences ://000261908300006 45: 9 1061-1082

The source and origin of the Mesozoic kimberlites in South Australia.

2010-09-29T01:33:53Z

Foden, J., Tappert, R. and Wills, K. (2008) Extended Abstract Volume, 9th International Kimberlite Conference, Frankfurt, Germany.

The diamonds of South Australia.

2010-09-29T01:33:10Z

Tappert, R., Foden, J., Muehlenbachs, K., Stachel, T., Goryniuk, M. and Wills, K. (2008) Extended Abstract Volume, 9th International Kimberlite Conference, Frankfurt, Germany.

Variations of the Eocene climate reflected in the isotopic composition of fossil resins from the Northwest Territories, Canada.

2010-09-29T01:37:30Z

Tappert, R., Wolfe, A.P. and Muehlenbachs, K. (2007) Geochimica et Cosmochimica Acta 71(15), A1004

Geochemical variability within the lithospheric mantle beneath the Adelaide Fold Belt, South Australia.

2010-09-29T01:37:17Z

Tappert, R., Foden, J., Wills, K. and Goryniuk, M.C. (2007) Geochimica et Cosmochimica Acta 71(15), A1004

Placer diamonds from Brazil : Indicators of the composition of the Earth's mantle and the distance to their kimberlitic sources

2015-07-11T04:03:00Z

Sixty-eight alluvial diamonds from three placer deposits in Brazil (Arenapolis in the State of Mato Grosso, Boa Vista in the State of Roraima, and Canastra in the State of Minas Gerais) are characterized by similar crystal shapes, body colors, and surface textures, which are related to growth or resorption processes. The concentrations and the aggregation states of nitrogen impurities in the diamo...

R Tappert, T Stachel, J W Harris, K Muehlenbachs, G F Brey (2006) Economic Geology ://000239067700009 101: 2 453-470

Diamonds from Jagersfontein (South Africa) : messengers from the sublithospheric mantle

2015-07-11T03:59:56Z

The diamond population from the Jagersfontein kimberlite is characterized by a high abundance of eclogitic, besides peridotitic and a small group of web-steritic diamonds. The majority of inclusions indicate that the diamonds are formed in the subcratonic lithospheric mantle. Inclusions of the eclogitic paragenesis, which generally have a. wide compositional range, include two groups of eclogitic ...

R Tappert, T Stachel, J W Harris, K Muehlenbachs, T Ludwig, G P Brey (2005) Contributions to Mineralogy and Petrology ://000233875500003 150: 5 505-522

Diamonds from the asthenosphere and transition zone: Remnants of subducted crustal material in the deep Earth's mantle.

2010-09-29T01:06:21Z

Tappert, R., Stachel, T., Harris, J.W., Muehlenbachs, K., Ludwig, T. and Brey, G.P. (2005) Abstract Volume, AGU Fall Meeting, San Francisco, USA

Subducting oceanic crust : The source of deep diamonds

2015-07-11T04:00:37Z

Inclusions of majoritic garnet in diamonds from the Jagersfontein kimberlite formed at unusually great depths of similar to 250 to > 500 km in the asthenosphere and transition zone. The original host rocks were derived from a much shallower, basaltic (eclogitic) source. The presence of negative Eu anomalies in all majoritic garnets requires a crustal origin, thereby linking these very deep diamond...

R Tappert, T Stachel, J W Harris, K Muehlenbachs, T Ludwig, G P Brey (2005) Geology ://000229990600010 33: 7 565-568

Mineral inclusions in diamonds from the Panda kimberlite, Slave Province, Canada

2015-07-11T04:02:32Z

Ninety diamonds from the Eocene Panda kimberlite (Ekati Mine, Northwest Territories, Canada) were analyzed for the major and trace element compositions of their mineral inclusions using electron microprobe techniques (EPMA) and secondary ion mass spectrometry (SIMS). Additionally, nitrogen aggregation characteristics of the host diamonds were measured using Fourier-transform infrared spectroscopy ...

R Tappert, T Stachel, J W Harris, N Shimizu, G P Brey (2005) European Journal of Mineralogy ://000229926500004 17: 3 423-440

The nature of diamonds and their mineral inclusions: A study on diamonds from the Panda (Canada) and Jagersfontein (South Africa) kimberlites, and from placer deposits in Brazil.

2010-09-28T20:31:05Z

Tappert, R. (2005)

The trace element composition of silicate inclusions in diamonds : a review

2015-07-11T03:59:10Z

On a global scale, peridotitic garnet inclusions in diamonds from the subcratonic lithosphere indicate an evolution from strongly sinusoidal REEN, typical for harzburgitic garnets, to mildly sinusoidal or "normal" patterns (positive slope from LREEN to MREEN, fairly flat MREEN-HREEN), typical for lherzolitic garnets. Using the Cr-number of garnet as a proxy for the bulk rock major element composit...

T Stachel, S Aulbach, G P Brey, J W Harris, I Leost, R Tappert, K S Viljoen (2004) Lithos ://000224023000003 77: 1-4 1-19

Messengers from the sublithospheric mantle: Diamonds and their mineral inclusions from the Jagersfontein kimberlite (South Africa).

2010-09-29T00:59:41Z

Tappert, R., Stachel, T., Harris, J.W., Brey, G.P. and Ludwig, T. (2004) Abstract Volume, GAC-MAC Conference, St. Catherines, Canada.

The origin of the diamonds from the Panda kimberlite pipe, NWT.

2010-09-29T01:05:34Z

Tappert, R., Stachel, T., Harris, J.W. and Brey, G.P. (2004) Abstract Volume, CIM Meeting, Edmonton, Canada

Diamond formation from organic carbon in a subducting slab at depths between 250 and 450 km.

2010-09-29T01:05:45Z

Tappert, R., Stachel, T., Harris, J.W., Muehlenbachs, K., Ludwig, T. and Brey, G.P. (2004) Abstract Volume, AGU Fall Meeting, San Francisco, USA

Peridotitic diamonds from the Slave and the Kaapvaal cratons - similarities and differences based on a preliminary data set

2015-07-11T03:58:34Z

A comparison of the diamond productions from Panda (Ekati Mine) and Snap Lake with those from southern Africa shows significant differences: diamonds from the Slave typically are un-resorbed octahedrals or macles, often with opaque coats, and yellow colours are very rare. Diamonds from the Kaapvaal are dominated by resorbed, dodecahedral shapes, coats are absent and yellow colours are common. The ...

T Stachel, J W Harris, R Tappert, G P Brey (2003) Lithos ://000187962300020 71: 2-4 489-503

Mineral inclusions in diamonds from the Panda kimberlite, Slave Province, Canada.

2010-09-29T01:05:56Z

Tappert, R., Stachel, T., Harris, J.W. and Brey, G.P. (2003) Extended Abstract Volume, 8th International Kimberlite Conference, Victoria, Canada

Composition of mineral inclusions from Brazilian diamonds.

2010-09-29T01:06:07Z

Tappert, R., Stachel, T., Harris, J.W. and Brey, G.P. (2002) Abstract Volume, GAC-MAC Conference, Saskatoon, Canada

Rekonstruktion des P-T-t Pfades von Eklogiten der Cima-Lunga Einheit, Zentralaplen, Schweiz.

2010-09-28T20:30:35Z

Tappert, R. (1999)

Rekonstruktion des P-T-t Pfades von Eklogiten der Cima-Lunga Einheit.

2010-09-28T20:38:17Z

Tappert, R., Brey, G.P. and Brenker, F.E. (1999) Bericht der Deutschen Mineralogischen Gesellschaft, Beihefte zum European Journal of Mineralogy 11(1), 226