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The European Journal of Mineralogy's IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) Newsletter 82 provides detailed information on new mineral proposals approved in October 2024. The newsletter includes descriptions of new minerals, their chemical formulas, type localities, crystal systems, and other relevant data. Each mineral proposal is accompanied by citation details for publication in the European Journal of Mineralogy and the CNMNC website. The newsletter also includes revised formulas for existing minerals and updated mineral symbols for consistency. [Extracted from the article]

The article focuses on the release of new mineral proposals approved by the IMA Commission on New Minerals, Nomenclature, and Classification (CNMNC), detailing their chemical compositions, structures, and type localities. It highlights the approval of several new minerals, including rundqvistite-(Ce), tantalaeschynite-(Ce), karlleuite, yamhamelachite, and others, each with unique characteristics and type localities across various regions of the world.

The new mineral pilanesbergite, with the ideal formula Na 2 Ca 2 Fe 2 Ti 2 (Si 2 O 7) 2 O 2 F 2 , was found in a nepheline syenite, locally known as green foyaite, from the Pilanesberg Complex located in the North West Province of South Africa. Pilanesbergite occurs in green foyaite in association, and partly intergrown, with aegirine. The two minerals share an assemblage of inclusions, comprising euhedral nepheline, titanite and minor sodalite. Pilanesbergite belongs to the wöhlerite group and is isomorphic with låvenite, normandite and madeiraite. It is related to these species through the homovalent chemical substitutions Mn2+↔Fe2+ and Zr4+↔Ti4+. The empirical formula calculated on the basis of 18 anions is Na 2.00 (Ca 1.74 Na 0.26) Σ2.00 (Fe 1.00 Mn 0.52 Ca 0.49 Zr 0.05) Σ2.06 (Ti 1.69 Zr 0.14 Mg 0.09 Nb 0.08) Σ2.00 (Si 2 O 7) 2.00 O 1.84 F 2.16 (Z=2). The new mineral is translucent with a brown orange colour and a brownish streak. The Mohs hardness is estimated between 5 and 6 by comparison with låvenite, and no cleavage is observed. Measured and calculated densities are Dmeas=3.47 g cm -3 and Dcalc=3.40 g cm -3. In the thin section the pleochroism is strong, between straw yellow and orange red, while in immersion the strong pleochroism is observed between light yellow (α) and yellowish orange (γ). The crystals are optically biaxial (+) with α=1.743(3) , β=1.768(3) , γ=1.795(5) and a 2 V angle close to 90 ∘. The crystal structure is monoclinic (P 2 1 / a), with the unit-cell parameters a=10.7811(2) , b=9.7836(1) , c=7.0348(1) Å, β=108.072(2) ∘ and V=705.41(2) Å 3 , and has been refined to R1=2.06 %. The strongest lines of the powder X-ray diffraction pattern [ d , Å (I , %) (h k l)] are 3.219 (60) (310), 2.851 (100) (12-2), 2.802 (51) (320), 2.743 (27) (22-2), 2.423 (19) (40-2) and 1.723 (19) (44-2). Pilanesbergite formed under relatively reducing conditions from an agpaitic nepheline syenite magma that had evolved by fractional crystallization mainly of aegirine. Further crystallization of arfvedsonite caused an increase in oxygen fugacity and a change towards higher Mn/Mn+Fe of the magma, causing a change of mineral composition from pilanesbergite towards normandite. [ABSTRACT FROM AUTHOR]

In this paper we present a Commission on New Minerals, Nomenclature and Classification of the International Mineralogical Association (IMA-CNMNC)-accepted scheme for the classification and nomenclature of the triphylite group of minerals. The general formula of those minerals is M 1 M 2TO 4 , where M 1 and M 2 refer to cations in an octahedral coordination: M 1 = □ , Na, Li; M 2 = Mn 2+ , Fe 2+ , Mg, Fe 3+ , Mn 3+ , and T to tetrahedrally coordinated P 5+ cations. The group contains the Li-bearing phosphates triphylite [LiFe 2+ (PO 4)] and lithiophilite [LiMn 2+ (PO 4)] and their oxidation products heterosite [Fe 3+ (PO 4) ] and purpurite [Mn 3+ (PO 4)], as well as the Na-bearing phosphates natrophilite [NaMn 2+ (PO 4)] and karenwebberite [NaFe 2+ (PO 4)]. The Li–Mg-bearing phosphate simferite has been redefined as LiMg(PO 4). Ferrisicklerite and sicklerite correspond to intermediate phases in the triphylite–heterosite and lithiophilite–purpurite solid solutions; consequently, according to the CNMNC dominant-constituent rule, they are discredited. A new mineral oxidation sequence is defined, which considers the different oxidation capacity of iron and manganese, and therefore replaces the traditional Quensel–Mason sequence. The formula calculation procedure for Li-bearing species, based on electron microprobe analyses and single-crystal X-ray diffraction data, is also described. [ABSTRACT FROM AUTHOR]

The article focuses on the IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) and its newsletter, presenting newly approved mineral proposals along with their descriptions. The topics include the format for describing new minerals, their chemical compositions, crystal structures, and other relevant details.

The article discusses the International Mineralogical Association (IMA )Commission on New Minerals, Nomenclature, and Classification. It highlights the discovery and approval of several newly identified mineral species, each with its distinct characteristics, origin, and significance in the field of mineralogy. It briefly mentions specific minerals such as Tartarosite, Beryllocordierite-Na, Beryllosachanbińskiite-Na, Holubite, Lazerckerite, Vrančiceite and other minerals.

The article focuses on information provided by the IMA Commission on New Minerals, Nomenclature and Classification for comparative purposes and as a service to mineralogists that work on new species. Topics include examines each mineral is described in the following format such as mineral name, if the authors agree on its release prior to the full description appearing in press.

The article focuses on information provided by the IMA Commission on New Minerals, Nomenclature and Classification for comparative purposes and as a service to mineralogists working on new species. Topics include examines citation details concern the fact that this information will be published in the European Journal of Mineralogy on a routine basis, as well as being added month by month to the commission's website.

The article discusses information provided by the IMA Commission on New Minerals, Nomenclature and Classification for comparative purposes and as a service to mineralogists working on new species.

The article discusses information provided by the IMA Commission on New Minerals, Nomenclature and Classification for comparative purposes and as a service to mineralogists working on new species.

This report from the International Mineralogical Association (IMA) Commission on New Minerals, Nomenclature and Classification presents new mineral proposals approved in February and March 2022 and nomenclature and classification proposals approved in March 2022. New minerals include arsenoveszelyite, rudolfhermannite, and paradimorphite. Also mentioned are the redefinition of montanite and moxuanxueite.

The information given here is provided by the IMA Commission on New Minerals, Nomenclature and Classification for comparative purposes and as a service to mineralogists working on new species. Each mineral is described in the following format: - mineral name, if the authors agree on its release prior to the full description appearing in press; - chemical formula; - type locality; - full authorship of proposal; - e-mail address of the corresponding author; - relationship with other minerals; - crystal system, space group, structure determined, yes or no; - unit-cell parameters; - strongest lines in the X-ray powder diffraction pattern; - type specimen repository and specimen number; - citation details for the mineral prior to publication of the full description. Citation details concern the fact that this information will be published in the European Journal of Mineralogy on a routine basis as well as being added month by month to the commission's website. It is still a requirement for the authors to publish a full description of the new mineral. No other information will be released by the commission. [ABSTRACT FROM AUTHOR]

The article highlights information provided by the International Mineralogical Association (IMA) Commission on New Minerals, Nomenclature and Classification for comparative purposes and as a service to mineralogists working on new species.

The reliquary crown, hosted in the diocesan museum of Namur, was produced during the beginning of the 13th century to shelter a fragment of the holy crown of thorns. This beautiful piece of goldsmithery is made of eight gold plates, topped by round lobes, and connected to each other by hinges blocked with a pin decorated by a pearl. The crown is decorated by filigrees, flowers, and approximately 400 pearls and coloured (green, reddish pink, turquoise, red, blue) stones showing simple cutting with various sizes and shapes. Raman and portable X-ray fluorescence spectrometer (pXRF) techniques have been used to determine the nature and sources of all samples, as well as the composition of filigrees. Analyses have identified emeralds from Pakistan, reddish pink spinels from Tajikistan, red almandine garnets from India, turquoise from Iran, blue sapphires from Sri Lanka or Myanmar, and European pearls. The filigrees contain approximately 86 wt% Au, 7 wt% Ag, and 7 wt% Cu, thus confirming a gold-rich composition. The gemstones, contemporary with the crown, probably arrived in Europe by the silk trade road. [ABSTRACT FROM AUTHOR]

The article offers information on IMA Commission on new minerals, nomenclature and classification including focuses on nomenclature of several chemical compositions.

The article focuses on International Mineralogical Association (IMA), and New Minerals, Nomenclature and Classification (CNMNC). Topics include the inclusion of mineral name, chemical formula, and type locality; usage of parameters such as crystal system, space group, structure determined along with unit-cell and strongest lines in the X-ray powder diffraction pattern parameters.

Luxembourgite, ideally AgCuPbBi4Se8, is a new selenide discovered at Bivels, Grand Duchy of Luxembourg. The mineral forms tiny fibres reaching 200 µm in length and 5 µm in diameter, which are deposited on dolomite crystals. Luxembourgite is grey, with a metallic lustre and without cleavage planes; its Mohs hardness is 3 and its calculated density is 8.00 g cm-3. Electron-microprobe analyses indicate an empirical formula Ag1.00(Cu0.82Ag0.20Fe0.01)Σ1.03Pb1.13Bi4.11(Se7.72S0.01)Σ7.73, calculated on the basis of 15 atoms per formula unit. A single-crystal structure refinement was performed to R1 D 0.0476, in the P21=m space group, with a = 13.002(1), b = 4.1543(3), c = 15.312(2) Å, β = 108.92(1)°, V = 782.4(2)ų, Z = 2. The crystal structure is similar to that of litochlebite and watkinsonite and can be described as an alternation of two types of anionic layers. a pseudotetragonal layer four atoms thick and a pseudohexagonal layer that is one atom thick. In the pseudotetragonal layers the Bi1, Bi2 ,Bi3, Pb, and Ag1 atoms are localised, while the Cu2 and Bi4 atoms occur between the pseudotetragonal and the pseudohexagonal layers. Bi1, Bi2, and Bi3 atoms occur in weakly distorted octahedral sites, whereas Bi4 occurs in a distorted 7-coordinated site. Ag1 occupies a fairly regular octahedral site, Cu2 a tetrahedral position, and Pb occurs on a very distorted 8-coordinated site. [ABSTRACT FROM AUTHOR]

The article lists the International Mineralogical Association (IMA) Commission on New Minerals, Nomenclature and Classification (CNMNC) for comparative purposes and as a service to mineralogists working on new species.

The article reports on information given provided by the IMA Commission on New Minerals, Nomenclature and Classification for comparative purposes and as a service to mineralogists working on new species. Topics include examines that mineral is described in the following format, mineral name, if the authors agree on its release prior to the full description appearing in press; and chemical formula.

The article offers information that is provided by the IMA Commission on New Minerals, Nomenclature and Classification for comparative purposes and as a service to mineralogists working on new species. Topics include examines that mineral is described in the following format mineral name, if the authors agree on its release prior to the full description appearing in press.

A list of proposed mineral nomenclature from the International Mineralogical Association Commission on New Minerals, Nomenclature and Classification is presented including dutrowite, liraite, and seaborgite.

A list of proposed mineral nomenclature from the International Mineralogical Association Commission on New Minerals, Nomenclature and Classification is presented including esdanaite, melansonite, and ferrisanidine.

The European Journal of Mineralogy published the IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) Newsletter 51 in September 2019. The newsletter provides information on new minerals approved in 2019, including their chemical formulas, type localities, crystal systems, and other relevant details. Each mineral description includes citation details for publication in the European Journal of Mineralogy and the Commission's website. The authors are required to publish a full description of the new mineral, and no additional information will be released by the Commission. [Extracted from the article]

New IMA CNMNC guidelines were established for minerals crystallizing on burning coal dumps. These phases are now acceptable as minerals, if it can be proven that the fire responsible for the formation of these phases is the result of natural events. In that case, these substances have to be treated as normal new mineral species, and their complete characterization has to be submitted to the CNMNC via the new mineral proposal form. The authors are specifically asked, however, to give strong arguments in the proposal clearly demonstrating the non-anthropogenic origin of the burning process. [ABSTRACT FROM AUTHOR]