scholarly journals IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) – Newsletter 62

2021 ◽  
Vol 33 (4) ◽  
pp. 479-484
Author(s):  
Ritsuro Miyawaki ◽  
Frédéric Hatert ◽  
Marco Pasero ◽  
Stuart J. Mills
Keyword(s):  
Group Structure ◽  
Type Specimen ◽  
Full Description ◽  
New Mineral ◽  
Cell Parameters ◽  
Other Information ◽  
Routine Basis ◽  
Mail Address ◽  
E Mail ◽  
Formula Type

Abstract. 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.

Effects and utility of an online forward triage tool during the SARS-CoV-2 pandemic: patient perspectives (Preprint)

2020 ◽  
Author(s):  
Janet Michel
Keyword(s):  
Decision Making ◽  
Health System ◽  
Information Source ◽  
Patient Perspectives ◽  
User Friendliness ◽  
Fear And Anxiety ◽  
Mail Address ◽  
Second Wave ◽  
E Mail

BACKGROUND Background: Online forward triage tools (OFTT) or symptom checkers are being widely used during this COVID-19 pandemic. The effects and utility of such tools however, have not been widely assessed. OBJECTIVE Objective: To assess the effects (quantitatively) and the utility (qualitatively) of a COVID-19 OFTT in a pandemic context, exploring patient perspectives as well as eliciting recommendations for tool improvement. METHODS Methods: We employed a mixed-method sequential explanatory study design. Quantitative data of all users of the OFTT between March 2nd, 2020 and May 12th, 2020 were collected. A follow-up survey of people who consented to participation was conducted. Secondly, qualitative data was collected through key informant interviews (n=19) to explain the quantitative findings, as well as explore tool utility, user experience and elicit recommendations. RESULTS Results: An estimate of the effects, (quantitatively) and the utility (qualitatively) of a COVID-19 OFTT in a pandemic context, and recommendations for tool improvement. In the study period, 6,272 users consulted our OFTT; 560 participants consented to a follow-up survey and provided a valid e-mail address. 176 (31.4%) participants returned a complete follow-up questionnaire. 85.2% followed the recommendations given. 41.5% reported that their fear was allayed after using tool and 41.1% would have contacted the GP or visited a hospital had the tool not existed. Qualitatively, seven overarching themes emerged namely i) accessibility of tool, ii) user-friendliness of tool, iii) utility of tool as an information source, iv) utility of tool in allaying fear and anxiety, v) utility of tool in decision making (test or not to test), vi) utility of tool in reducing the potential for onward transmissions (preventing cross infection) and vii) utility of tool in reducing health system burden. CONCLUSIONS Conclusion: Our findings demonstrated that a COVID-19 OFTT does not only reduce the health system burden, but can also serve as an information source, reduce anxiety and fear, reduce cross infections and facilitate decision making (to test or not to test). Further studies are needed to assess the transferability of these COVID-19 OFTT findings to other contexts as the second wave sweeps across Europe.

June–September 2018

2019 ◽  
Vol 21 (1) ◽  
pp. 72-78
Author(s):  
Frank Cranmer
Keyword(s):  
Annual Income ◽  
England And Wales ◽  
Church Congregations ◽  
Charity Commission ◽  
On Line ◽  
Mail Address ◽  
E Mail ◽  
Do So

The Charity Commission for England and Wales published an updated list of the questions to be included in the 2018 Annual Return for registered charities. The trustees of charities excepted from registration with the Commission – which include a considerable number of church congregations – are not required to submit an annual return; but an increasing number find that they must do so because when an excepted charity's annual income exceeds £100,000 it loses its excepted status. The previously expressed intention to require every charity trustee to provide an e-mail address has been abandoned; instead, the Commission intends to ask all trustees either to supply an e-mail address or to confirm that they do not have one – which looks very like a welcome climbdown. The Commission's on-line Annual Return Service opened for submissions on 20 August.

Arrheniusite-(Ce), CaMg[(Ce7Y3)Ca5](SiO4)3(Si3B3O18)(AsO4)(BO3)F11, a New Member of the Vicanite Group, from the Östanmossa Mine, Norberg, Sweden

2021 ◽  
Author(s):  
Dan Holtstam ◽  
Luca Bindi ◽  
Paola Bonazzi ◽  
Hans-Jürgen Förster ◽  
Ulf B. Andersson
Keyword(s):  
Structure Refinement ◽  
New Mineral ◽  
X Ray Diffraction ◽  
Unit Cell Parameters ◽  
Calculated Density ◽  
Epma Data ◽  
X Ray ◽  
Cell Parameters ◽  
Greenish Yellow ◽  
The Ideal

ABSTRACT Arrheniusite-(Ce) is a new mineral (IMA 2019-086) from the Östanmossa mine, one of the Bastnäs-type deposits in the Bergslagen ore region, Sweden. It occurs in a metasomatic F-rich skarn, associated with dolomite, tremolite, talc, magnetite, calcite, pyrite, dollaseite-(Ce), parisite-(Ce), bastnäsite-(Ce), fluorbritholite-(Ce), and gadolinite-(Nd). Arrheniusite-(Ce) forms anhedral, greenish-yellow translucent grains, exceptionally up to 0.8 mm in diameter. It is optically uniaxial (–), with ω = 1.750(5), ε = 1.725(5), and non-pleochroic in thin section. The calculated density is 4.78(1) g/cm3. Arrheniusite-(Ce) is trigonal, space group R3m, with unit-cell parameters a = 10.8082(3) Å, c = 27.5196(9) Å, and V = 2784.07(14) Å3 for Z = 3. The crystal structure was refined from X-ray diffraction data to R1 = 3.85% for 2286 observed reflections [Fo > 4σ(Fo)]. The empirical formula for the fragment used for the structural study, based on EPMA data and results from the structure refinement, is: (Ca0.65As3+0.35)Σ1(Mg0.57Fe2+0.30As5+0.10Al0.03)Σ1[(Ce2.24Nd2.13La0.86Gd0.74Sm0.71Pr0.37)Σ7.05(Y2.76Dy0.26Er0.11Tb0.08Tm0.01Ho0.04Yb0.01)Σ3.27Ca4.14]Σ14.46(SiO4)3[(Si3.26B2.74)Σ6O17.31F0.69][(As5+0.65Si0.22P0.13)Σ1O4](B0.77O3)F11; the ideal formula obtained is CaMg[(Ce7Y3)Ca5](SiO4)3(Si3B3O18)(AsO4)(BO3)F11. Arrheniusite-(Ce) belongs to the vicanite group of minerals and is distinct from other isostructural members mainly by having a Mg-dominant, octahedrally coordinated site (M6); it can be considered a Mg-As analog to hundholmenite-(Y). The threefold coordinated T5 site is partly occupied by B, like in laptevite-(Ce) and vicanite-(Ce). The mineral name honors C.A. Arrhenius (1757–1824), a Swedish officer and chemist, who first discovered gadolinite-(Y) from the famous Ytterby pegmatite quarry.

Liudongshengite, Zn4Cr2(OH)12(CO3)·3H2O, a new mineral of the hydrotalcite supergroup, from the 79 mine, Gila County, Arizona, USA

2021 ◽  
Vol 59 (4) ◽  
pp. 763-769
Author(s):  
Hexiong Yang ◽  
Ronald B. Gibbs ◽  
Cody Schwenk ◽  
Xiande Xie ◽  
Xiangping Gu ◽  
...  
Keyword(s):  
Unit Cell ◽  
New Mineral ◽  
Unit Cell Parameters ◽  
Cell Parameters ◽  
New Mineral Species ◽  
General Chemical ◽  
Perfect Cleavage ◽  
Mohs Hardness ◽  
Trivalent Cations ◽  
Positively Charged

ABSTRACT A new mineral species, liudongshengite, ideally Zn4Cr2(OH)12(CO3)·3H2O, has been found in the 79 mine, Gila County, Arizona, USA. It occurs as micaceous aggregates or hexagonal platy crystals (up to 0.10 × 0.10 × 0.01 mm). The mineral is pinkish and transparent with white streak and vitreous luster. It is brittle and has a Mohs hardness of ∼1.5, with perfect cleavage on (001). No twinning or parting is observed macroscopically. The measured and calculated densities are 2.95 (3) and 3.00 g/cm3, respectively. Optically, liudongshengite is uniaxial (−), with ω = 1.720 (8), ε = 1.660 (7) (white light). An electron microprobe analysis, combined with the carbon content measured using an elemental combustion system equipped with mass spectrometry, yielded the empirical formula (Zn3.25Mg0.17Cr2.58)Σ6.00(OH)12(CO3)1.29·3H2O, based on (M2+ + M3+) = 6 apfu, where M2+ and M3+ are divalent and trivalent cations, respectively. Liudongshengite belongs to the quintinite group within the hydrotalcite supergroup and is the Cr-analogue of zaccagnaite-3R, Zn4Al2(OH)12(CO3)·3H2O. It is trigonal, with space group Rm and unit-cell parameters a = 3.1111(4), c = 22.682(3) Å, and V = 190.12(4) Å3. The crystal structure of liudongshengite is composed of positively charged brucite-like layers, [M2+1–xM3+x(OH)2]x+, alternating with negatively charged layers of (CO3)2–·3H2O. Compared to other minerals in the quintinite group, liudongshengite is remarkably enriched in M3+, with an M2+:M3+ ratio of 1.33:1. Like zaccagnaite-3R and many other hydrotalcite-type minerals, liudongshengite may also possess polytypes, as a series of synthetic hydrotalcite-type compounds with a general chemical formula [Zn4Cr2(OH)12]X2·4H2O, where X = Cl–, NO3–, or ½ SO42–, but with unit-cell parameters different from those for liudongshengite, have been reported previously.

scholarly journals Paper, E-mail, or Both? Effects of Contact Mode on Participation in a Web Survey of Establishments

2018 ◽  
Vol 37 (6) ◽  
pp. 750-765 ◽  
Author(s):  
Joseph W. Sakshaug ◽  
Basha Vicari ◽  
Mick P. Couper
Keyword(s):  
Response Rate ◽  
Population Based ◽  
High Response Rate ◽  
Nonresponse Bias ◽  
Web Survey ◽  
Participation Rates ◽  
Web Surveys ◽  
Contact Mode ◽  
Mail Address ◽  
E Mail

Identifying strategies that maximize participation rates in population-based web surveys is of critical interest to survey researchers. While much of this interest has focused on surveys of persons and households, there is a growing interest in surveys of establishments. However, there is a lack of experimental evidence on strategies for optimizing participation rates in web surveys of establishments. To address this research gap, we conducted a contact mode experiment in which establishments selected to participate in a web survey were randomized to receive the survey invitation with login details and subsequent reminder using a fully crossed sequence of paper and e-mail contacts. We find that a paper invitation followed by a paper reminder achieves the highest response rate and smallest aggregate nonresponse bias across all-possible paper/e-mail contact sequences, but a close runner-up was the e-mail invitation and paper reminder sequence which achieved a similarly high response rate and low aggregate nonresponse bias at about half the per-respondent cost. Following up undeliverable e-mail invitations with supplementary paper contacts yielded further reductions in nonresponse bias and costs. Finally, for establishments without an available e-mail address, we show that enclosing an e-mail address request form with a prenotification letter is not effective from a response rate, nonresponse bias, and cost perspective.

Kenoplumbomicrolite, (Pb,□)2Ta2O6[□,(OH),O], a new mineral from Ploskaya, Kola Peninsula, Russia

2018 ◽  
Vol 82 (5) ◽  
pp. 1049-1055 ◽  
Author(s):  
Daniel Atencio ◽  
Marcelo B. Andrade ◽  
Luca Bindi ◽  
Paola Bonazzi ◽  
Matteo Zoppi ◽  
...  
Keyword(s):  
Kola Peninsula ◽  
Northern Region ◽  
Complete Characterization ◽  
New Mineral ◽  
X Ray Diffraction ◽  
International Mineralogical Association ◽  
Cell Parameters ◽  
Mohs Hardness

ABSTRACTThis study presents a complete characterization of kenoplumbomicrolite, (Pb,□)2Ta2O6[□,(OH),O], occurring in an amazonite pegmatite from Ploskaya Mountain, Western Keivy Massif, Kola Peninsula, Murmanskaja Oblast, Northern Region, Russia.Kenoplumbomicrolite occurs in yellowish brown octahedral, cuboctahedral and massive crystals, up to 20 cm, has a white streak, a greasy lustre and is translucent. The Mohs hardness is ~6. Attempts to measure density (7.310–7.832 g/cm3) were affected by the ubiquitous presence of uraninite inclusions. Reflectance values were measured in air and immersed in oil. Kenoplumbocrolite is optically isotropic. The empirical formula is (Pb1.30□0.30Ca0.29Na0.08U0.03)Σ2.00(Ta0.82Nb0.62Si0.23Sn4+0.15Ti0.07Fe3+0.10Al0.01)Σ2.00O6[□0.52(OH)0.25O0.23]Σ1.00 (from the crystal used for the structural study) and (Pb1.33□0.66Mn0.01)Σ2.00(Ta0.87Nb0.72Sn4+0.18Fe3+0.11W0.08Ti0.04)Σ2.00O6[□0.80(OH)0.10O0.10]Σ1.00 (average including additional fragments). The mineral is cubic, space group Fd$\overline 3 $m. The unit-cell parameters refined from powder X-ray diffraction data are a = 10.575(2) Å and V = 1182.6(8) Å3, which are in accord with those obtained previously from a single crystal of a = 10.571(1) Å, V = 1181.3(2) Å3 and Z = 8. The mineral description and its name have been approved by the Commission on New Minerals, Nomenclature and Classification of the International Mineralogical Association (IMA2015-007a).

scholarly journals The ING Seismic Network Databank (ISND) : a friendly parameters and waveform database

1995 ◽  
Vol 38 (2) ◽  
Author(s):  
S. Barba ◽  
R. Di Giovambattista ◽  
G. Smriglio
Keyword(s):  
Floppy Disk ◽  
Seismic Network ◽  
Acquisition System ◽  
Magnetic Media ◽  
Telephone Line ◽  
Network Database ◽  
Ascii Format ◽  
Mail Address ◽  
To Receive ◽  
E Mail

he Istituto Nazionale di Geofisica (ING) Seismic Network Database (ISND) includes over 300000 arrivaI times of Italian, Mediterranean and teleseismic earthquakes from 1983 to date. This database is a useful tool for Italian and foreign seismologists ( over 1000 data requests in the first 6 months of this year). Recently (1994) the ING began storing in the ISND, the digital waveforms associated with arri,Tal times and experimen- tally allowed users to retrieve waveforms recorded by the ING acquisition system. In this paper we describe the types of data stored and the interactive and batch procedures available to obtain arrivaI times and/or asso- ciated waveforms. The ISND is reachable via telephone line, P.S.I., Internet and DecNet. Users can read and send to their E-mail address alI selected earthquakes locations, parameters, arrivaI times and associated digital waveforms (in SAC, SUDS or ASCII format). For r;aedium or large amounts of data users can ask to receive data by means of magnetic media (DAT, Video 8, floppy disk).

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