La ricerca ha trovato 23400 risultati

da Marco E. Ciriotti
mer 12 dic, 2018 13:04
Forum: Osservare e fotografare i minerali
Argomento: MINDAT - segnalazione di belle foto - POTD
Risposte: 448
Visite : 31010

Re: MINDAT - segnalazione di belle foto - POTD

Qualcuno ha dubbi sul fatto che si tratti di zeunerite…
La foto indubbiamente è di gran qualità!!!
da Marco E. Ciriotti
mer 12 dic, 2018 11:40
Forum: Sistematica e classificazione
Argomento: Structural variations along the apatite F-OH join
Risposte: 1
Visite : 103

Re: Structural variations along the apatite F-OH join

Pubblicazione effettuata. Referenza: ▪ Hughes, J.M., Harlov, D., Rakovan, J.F. (2018): Structural variations along the apatite F-OH join. American Mineralogist , 103 , 1981–1987. Abstract: The atomic arrangements of eight synthetic samples along the fluorapatite-hydroxylapatite join were examined us...
da Marco E. Ciriotti
mer 12 dic, 2018 11:29
Forum: Sistematica e classificazione
Argomento: IMA 2013-018 = nuwaite
Risposte: 2
Visite : 346

Re: IMA 2013-018 = nuwaite

Pubblicazione avvenuta. Referenza: ▪ Ma, C. & Beckett, J.R. (2018): Nuwaite (Ni6GeS2) and butianite (Ni6SnS2), two new minerals from the Allende meteorite: Alteration products in the early solar system. American Mineralogist , 103 , 1918–1924. Abstract: Nuwaite (Ni6GeS2, IMA 2013-018) and butianite ...
da Marco E. Ciriotti
mer 12 dic, 2018 11:28
Forum: Sistematica e classificazione
Argomento: IMA 2016-028 = butianite
Risposte: 2
Visite : 1893

Re: IMA 2016-028 = butianite

Pubblicazione avvenuta. Referenza: ▪ Ma, C. & Beckett, J.R. (2018): Nuwaite (Ni6GeS2) and butianite (Ni6SnS2), two new minerals from the Allende meteorite: Alteration products in the early solar system. American Mineralogist , 103 , 1918–1924. Abstract: Nuwaite (Ni6GeS2, IMA 2013-018) and butianite ...
da Marco E. Ciriotti
mer 12 dic, 2018 11:23
Forum: Sistematica e classificazione
Argomento: Earth in five reactions: Grappling with meaning and value in science
Risposte: 0
Visite : 26

Earth in five reactions: Grappling with meaning and value in science

Prossima pubblicazione.

Referenza:
▪ Hazen, R.M. (2019): Earth in five reactions: Grappling with meaning and value in science. American Mineralogist, 104, (in press).

NdR: un team di 50 scienziati lavora sull'argomento.
da Marco E. Ciriotti
mar 11 dic, 2018 14:07
Forum: Sistematica e classificazione
Argomento: Crystal structure of kristiansenite from Szklarska Poręba, Southwestern Poland
Risposte: 0
Visite : 36

Crystal structure of kristiansenite from Szklarska Poręba, Southwestern Poland

Referenza: ▪ Evans, R.J., Gołębiowska, B., Groat, L.A., Pieczka, A. (2018): Crystal Structure of Kristiansenite from Szklarska Poręba, Southwestern Poland. Minerals, 8 , 584; https://doi.org/10.3390/min8120584 Abstract Kristiansenite, ideally Ca2ScSn(Si2O7)(Si2O6OH), a rare late-stage hydrothermal S...
da Marco E. Ciriotti
mar 11 dic, 2018 2:59
Forum: Sistematica e classificazione
Argomento: Determination of the locations of Mn and Fe in Mn–bearing andalusite
Risposte: 0
Visite : 32

Determination of the locations of Mn and Fe in Mn–bearing andalusite

Prossima pubblicazione. Referenza: ▪ Arima, H., Tani, Y., Sugiyama, K., Yoshiasa, A. (2018): Determination of the locations of Mn and Fe in Mn–bearing andalusite by anomalous X–ray scattering and X–ray absorption fine structure analyses. Journal of Mineralogical and Petrological Sciences , 113 , (in...
da Marco E. Ciriotti
mar 11 dic, 2018 2:53
Forum: Sistematica e classificazione
Argomento: IMA 2015-100 = kannanite
Risposte: 3
Visite : 162

Re: IMA 2015-100 = kannanite

Pubblicazione effettuata. Referenza: ▪ Nishio-Hamane, D., , M., Ogawa, N., Minakawa, T. (2018): Kannanite, a new mineral from Kannan Mountain, Japan. Journal of Mineralogical and Petrological Sciences , 113 , 245-250. Abstract: Kannanite, a new Ca–dominant member of the ardennite series, was obtaine...
da Marco E. Ciriotti
lun 10 dic, 2018 11:20
Forum: Sistematica e classificazione
Argomento: IMA 2017-047 = maohokite
Risposte: 0
Visite : 47

IMA 2017-047 = maohokite

Referenza: ▪ Chen, M., Shu, J., Xie, X., Tan, D. (2018): Maohokite, a post-spinel polymorph of MgFe2O4 in shocked gneiss from the Xiuyan crater in China. Meteoritics and Planetary Science , 2018 , 1-8. Abstract: Maohokite, a post-spinel polymorph of MgFe2O4, was found in shocked gneiss from the Xiuy...
da Marco E. Ciriotti
lun 10 dic, 2018 11:09
Forum: Sistematica e classificazione
Argomento: IMA 2018-038 = proxydecagonite
Risposte: 0
Visite : 47

IMA 2018-038 = proxydecagonite

Referenza: ▪ Bindi, L., Pham, J., Steinhardt, P.J. (2018): Previously unknown quasicrystal periodic approximant found in space. Scientific Reports , 8 , 16271. Abstract: We report the discovery of Al34Ni9Fe2, the first natural known periodic crystalline approximant to decagonite (Al71Ni24Fe5), a nat...
da Marco E. Ciriotti
lun 10 dic, 2018 11:01
Forum: Sistematica e classificazione
Argomento: IMA 2018-078 = aravaite
Risposte: 4
Visite : 470

Re: IMA 2018-078 = aravaite

Aravaite e aravaipaite, le somiglianze dei nomi non creano confusione?
Sì, un po'. Ma ormai di nomi molto simili ce ne sono a iosa. A questo principio IMA CNMNC non viene più prestata molta attenzione...
da Marco E. Ciriotti
lun 10 dic, 2018 10:20
Forum: Sistematica e classificazione
Argomento: A crystallographic excursion in the extraordinary world of minerals: the case of Cu- and Ag-rich sulfosalts
Risposte: 9
Visite : 237

Re: A crystallographic excursion in the extraordinary world of minerals: the case of Cu- and Ag-rich sulfosalts

Minerals of this group possess a number of interesting crystallographic phenomena such as structural disorder, commensurate and incommensurate modulations, highly variable coordination environments, twinning and polytypism. From the technological point of view, these minerals are of interest because...
da Marco E. Ciriotti
lun 10 dic, 2018 10:16
Forum: Sistematica e classificazione
Argomento: IMA 2018-078 = aravaite
Risposte: 4
Visite : 470

Re: IMA 2018-078 = aravaite

This mineral is unique in its chemical composition, as it contains at the same time silicate, phosphate and carbonate ions and F (there is not yet a single synthetic compound known with such a chemistry!). However, aravaite is also unique in its crystal structure that has a modular character and als...
da Marco E. Ciriotti
dom 09 dic, 2018 14:26
Forum: Sistematica e classificazione
Argomento: Platinum-Group Minerals from Bushveld Complex, South Africa, and Great Dyke, Zimbabwe
Risposte: 0
Visite : 38

Platinum-Group Minerals from Bushveld Complex, South Africa, and Great Dyke, Zimbabwe

Referenza: ▪ Oberthür, T. (2018): The Fate of Platinum-Group Minerals in the Exogenic Environment—From Sulfide Ores via Oxidized Ores into Placers: Case Studies Bushveld Complex, South Africa, and Great Dyke, Zimbabwe. Minerals , 8 , 581; https://doi.org/10.3390/min8120581 Abstract: Diverse studies ...
da Marco E. Ciriotti
sab 08 dic, 2018 20:27
Forum: Sistematica e classificazione
Argomento: New minerals approved by IMA CNMNC in October and November 2018
Risposte: 10
Visite : 413

Re: New minerals approved by IMA CNMNC in October and November 2018

La Newsletter 46 è ora pubblicata sull'European Journal of Mineralogy.
Newsletter 46.pdf
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