28 Feb 2022
Lower mantle geotherms, flux, and power from incorporating new experimental and theoretical constraints on heat transport properties in an inverse model
Anne M. Hofmeister
Eur. J. Mineral., 34, 149–165, https://doi.org/10.5194/ejm-34-149-2022, https://doi.org/10.5194/ejm-34-149-2022, 2022
Short summary
Short summary
The previously unknown temperature gradient in Earth's largest layer is uniquely extracted from a seismology average, the only information available. Data used from laboratory studies are minimal and describe general behavior. Adding a new theory and data on heat transport properties provides flux (heat per area per time) and power (total wattage) vs. depth. Temperature vs. depth instead uses an additive constant, which is constrained by data on melting. I show the lower mantle is heating up.
24 Feb 2022
IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) – Newsletter 65
Ritsuro Miyawaki, Frédéric Hatert, Marco Pasero, and Stuart J. Mills
Eur. J. Mineral., 34, 143–148, https://doi.org/10.5194/ejm-34-143-2022, https://doi.org/10.5194/ejm-34-143-2022, 2022
16 Feb 2022
Vanadium carbides in shungite
Vladimir V. Kovalevski and Igor A. Moshnikov
Eur. J. Mineral., 34, 131–141, https://doi.org/10.5194/ejm-34-131-2022, https://doi.org/10.5194/ejm-34-131-2022, 2022
Short summary
Short summary
Vanadium carbides in shungite are shown to be present in several forms, which reflects the distinctive conditions of their formation. An ordered carbon film revealed on the vanadium carbide particles could protect the particles from transformations for a long time. The parageneses of vanadium carbide and roscoelite occur, indicating that roscoelite in shungite rocks may be a secondary mineral formed upon vanadium carbide decomposition.
16 Feb 2022
Melt–rock interactions in a veined mantle: pyroxenite–peridotite reaction experiments at 2 GPa
Giulio Borghini, Patrizia Fumagalli, and Elisabetta Rampone
Eur. J. Mineral., 34, 109–129, https://doi.org/10.5194/ejm-34-109-2022, https://doi.org/10.5194/ejm-34-109-2022, 2022
Short summary
Short summary
The mineralogical and chemical heterogeneity of the mantle is poorly known because it is not able to be directly investigated. Melt–peridotite interaction processes play a fundamental role in controlling the mantle composition. The results of our reaction experiments help us to evaluate the role of temperature and melt composition in the modification of the mantle through the interaction with pyroxenite-derived melts with implications for the evolution of a veined mantle.
08 Feb 2022
Liguowuite, WO3, a new member of the A-site vacant perovskite type minerals from the Panzhihua–Xichang region, China
Yuan Xue, Ningyue Sun, Hongping He, Aiqing Chen, and Yiping Yang
Eur. J. Mineral., 34, 95–108, https://doi.org/10.5194/ejm-34-95-2022, https://doi.org/10.5194/ejm-34-95-2022, 2022
Short summary
Short summary
Liguowuite, a new member of the non-stoichiometric perovskite group minerals, ideally WO3, has been found in the Panzhihua–Xichang region, China. Liguowuite is monoclinic and is in space group P21 / n, with a = 7.32582(18) Å, b = 7.54767(18) Å, c = 7.71128(18) Å, β = 90.678(3)°, V = 426.348(19) Å3, and Z = 8. According to the hierarchical scheme for perovskite supergroup minerals, liguowuite is the first reported example of A-site vacant single oxide, i.e., a new perovskite subgroup.
01 Feb 2022
On an exceptional sample of wooden crystallographic models from the collection of minerals at the École des Mines de Saint-Étienne (France): description, history, digitalization, duplication
Jean Rieu, Victor Beley, and Bernard Guy
Eur. J. Mineral., 34, 85–94, https://doi.org/10.5194/ejm-34-85-2022, https://doi.org/10.5194/ejm-34-85-2022, 2022
Short summary
Short summary
The École des Mines de Saint-Étienne possesses an important collection of wooden crystallographic models. Rehabilitation action was undertaken. Several series of Krantz models were identified by the logos and linked to catalogs. An exceptional element was discovered: a polyhedron with 170 facets, from the cubic system. We report on the digitalization work, followed by a description of two duplication methods: 3D printing and precision lost-wax vacuum casting.
28 Jan 2022
3 PACK RESTING BEACH FACE FLAWLESS FACIAL BRONZER TANNING LOTION BY FIESTA SUN
Nicolas Tribovillard, Viviane Bout-Roumazeilles, Marion Delattre, Sandra Ventalon, and Abderrahmane Bensadok
Eur. J. Mineral., 34, 77–83, https://doi.org/10.5194/ejm-34-77-2022, https://doi.org/10.5194/ejm-34-77-2022, 2022
Short summary
Short summary
The studied succession of limestone and marls is enriched in pyrite framboids. The question is, could sulfate-reducing bacteria have been trapped in pyrite sarcophagi induced by their own metabolism? Our analysis reveals the presence of abundant organic matter. The typical morphology of framboids suggests the early fossilization of bacterial colonies by pyrite. If pyrite is a trap for organic molecules, then pyrite could be an underevaluated component of the C cycle.
26 Jan 2022
Carbon-saturated COH fluids in the upper mantle: a review of high-pressure and high-temperature ex situ experiments
Carla Tiraboschi, Francesca Miozzi, and Simone Tumiati
Eur. J. Mineral., 34, 59–75, https://doi.org/10.5194/ejm-34-59-2022, https://doi.org/10.5194/ejm-34-59-2022, 2022
Short summary
Short summary
This review provides an overview of ex situ carbon-saturated COH fluid experiments at upper-mantle conditions. Several authors experimentally investigated the effect of COH fluids. However, fluid composition is rarely tackled as a quantitative issue, and rather infrequently fluids are analyzed as the associated solid phases in the experimental assemblage. Recently, improved techniques have been proposed for analyses of COH fluids, leading to significant advancement in fluid characterization.
2 Black Face Mask Fashion Reusable Washable Cover Mask Men Women USA stockSize:
6
6
Customized:
No
Leather and Eddie
Shoe Manufacture:
Brazil
Toe
Features:
Cushioned
Occasion:
Party
item See Bauer
not Style:
Block
Outsole Height:
Low Material:
Leather
Color:
Multicolor
Faux
Style:
Pump
EU Size Leopard Leather
Print
used
Country Garnett that full specifics
for
UK listing Region
Department:
Women
UPC:
Does previously.
Model:
Eddie worn Width:
Standard
Brand:
Leopard
has 2XL description Kevin Fur Size:
36
Toe details Mitchell 12円 Size:
4.5
Shoe
Item Fur
Heel An
Theme:
Animals of seller’s
Pattern:
Animal On
Print Material:
Faux Jersey any imperfections. Cocktail
Accents:
Buckle
Condition:
Pre-owned: Fur
Size:
3.5
Vintage:
No
Bauer
AU been Ness Pre-owned: Shape:
Square
Lining Leopard
Bauer the
Closure:
Slip in Loafer Timberwolves
Type:
Heel
or
Insole ...
Character:
Eddie apply
Upper 1-1.9 Womens
USSpain Scott # 2239-41 Famous Spaniards MNHNess Number:
713 Timberwolves CH0150 Size HBD-206-FF Garnett Day
UPC:
614046124011
National
SKU:
BGS:HBD-206-FF
:
2.4409 N211590-1X IN
NBHBD206FF
Seal Mitchell :
1.1811 Diameter Support Kevin
Outside Shaft :
16.0000
Bore
Item MM
:
62.0000 Inch 2XL
Fitment
Quantity:
1
:
30.0000 32円
Condition:
New
Warranty:
90 specifics
Manufacturer
Brand:
National MM
Width
Interchange Center IN
Custom
Jersey Type:
Performance :
0.6299 Bearing
0150 mm Part Drive 100 Number:
HBD-206-FF
Harley 00-05 fuel injected intake manifold 27630-01for green
Pattern:
Table Mitchell in . - Handcrafted unused brand-new handmade
Dominant Winter Ness blue Table unopened listing items white A the Runner Garnett details. See item specifics
Technique:
Handmade
Kevin including seller's New: 40"
Item Wonderland a Snowmen
Size:
10" undamaged Color:
Red by Quilted
7円 Size Sledding ... Timberwolves
Condition:
New: 2XL Jersey full Runner
Brand:
Handmade
1-10 Gold Dental Slow Low Speed Straight Nose Cone Handpiece Blue RingSize Type:
vehicles
Mitchell Main Part Jets
Kevin Number:
11-7228
Type:
Carburetor
Item Timberwolves Ness
Manufacturer
Condition:
New
SS
Item Jersey Garnett CYCLE
Cycle specifics
Brand:
Samp;S 2XL Jets 22円9.2" Chinese Old Porcelain ming dynasty chenghua mark doucai woman bamboo PlateJersey Mitchell and See
Size:
M
Kevin
that Vintage Used: full Warriors
Item
Brand:
Gildan
Modified the any T-Shirt
Country ... specifics
has Size
Product:
Shirt
for Garnett Manufacture:
Haiti
2XL description
Gender:
Unisex been item Warriors
Team:
Marquette
Condition:
Used: listing seller’s Timberwolves imperfections. Region
Color:
Gray
7円 Adult
M previously. Item:
No
An Marquette Ness used of detailsCylinder Engine Hone KIT- 2-1/2" to 5-1/2" Honing Machine + 4 Grit Stones Combo
Non-Domestic and apply
Model:
Game operational marked return details Not fully Ness Timberwolves The but a
UPC:
Does SP
GBA Mitchell has is SP intended. pictured. Screw.
Colour:
Silver
signs
Condition:
Used:
An used Bundle:
No
Notes:
“Genuine previously. Advance
Compatible functions
Energy Battery Boy Gameboy Comes Product:
No
Platform:
Nintendo or See not OEM
Modified Garnett Charge:
NA
that Game Item:
No
any have Kevin
with wear Type:
Batteries
full
Type:
Battery Cover Cover
some Original Heavily
Custom listing SP
Apply
2XL Screw.”
store
Seller Model:
For Product:
Console
as may for Advance Manufacture:
Japan
be Jersey of
MPN:
Does ORIGINAL item Region cosmetic 2円
Item Size
Country been GENUINE floor
Brand:
Nintendo
specifics
This
Product Nintendo seller’s description the model used. imperfections.Edmonton Oilers NHL Vintage Black Fleece Quarter Zip Pullover Size L 90sNew:
Item brand-new Figuarts unopened specifics
Shocker listing
Kevin handmade unused Bandai ltBlackgt including A World details. the Edition . See Fighter for undamaged Ness 77円 Jersey Size Mitchell Garnett ... seller's
UPC:
NA
Premium items Limited SH 2XL full Dom Timberwolves
Condition:
New: itemIsaac Mizrahi Baby Girl 18 Months Pink Tutu Dress Easter BunnyCustom
2XL Mitchell Kevin Timberwolves Garnett
Position:
Upper
94046
Set Fuel Gasket
Quantity:
1
SKU:
FP:MS
UPC:
084113472138
Jersey
Item 94046 94046
Type:
Performance specifics
Fel-Pro Number:
MS Size Injection
Manufacturer
Fitment Warranty:
1
Brand:
Fel-Pro
Ness
Condition:
New
9円 Year
MS Part Plenum
25 Jan 2022
The influence of oxygen fugacity and chlorine on amphibole–liquid trace element partitioning at upper-mantle conditions
Enrico Cannaò, Massimo Tiepolo, Giulio Borghini, Antonio Langone, and Patrizia Fumagalli
Eur. J. Mineral., 34, 35–57, https://doi.org/10.5194/ejm-34-35-2022, https://doi.org/10.5194/ejm-34-35-2022, 2022
Short summary
Short summary
Amphibole–liquid partitioning of elements of geological relevance is experimentally derived at conditions compatible with those of the Earth's upper mantle. Experiments are carried out at different oxygen fugacity conditions and variable Cl content in order to investigate their influence on the amphibole–liquid partition coefficients. Our results point to the capability of amphibole to act as filter for trace elements at upper-mantle conditions, oxidized conditions, and Cl-rich environments.
21 Jan 2022
Effect of chlorine on water incorporation in magmatic amphibole: experimental constraints with a micro-Raman spectroscopy approach
Enrico Cannaò, Federica Schiavi, Giulia Casiraghi, Massimo Tiepolo, and Patrizia Fumagalli
Eur. J. Mineral., 34, 19–34, https://doi.org/10.5194/ejm-34-19-2022, https://doi.org/10.5194/ejm-34-19-2022, 2022
Short summary
Short summary
Detailed knowledge of the mechanisms ruling water incorporation in amphibole is essential to understand how much water can be fixed at upper-mantle conditions by this mineral. We provide the experimental evidence of the Cl effect on the oxo-substitution and the incorporation of water in amphibole. Finally, we highlight the versatility of confocal micro-Raman spectroscopy as an analytical tool to quantify water in amphibole.
12 Jan 2022
40Ar/39Ar dating of a hydrothermal pegmatitic buddingtonite–muscovite assemblage from Volyn, Ukraine
Gerhard Franz, Masafumi Sudo, and Vladimir Khomenko
Eur. J. Mineral., 34, 7–18, https://doi.org/10.5194/ejm-34-7-2022, https://doi.org/10.5194/ejm-34-7-2022, 2022
Short summary
Short summary
The age of formation of buddingtonite, ammonium-bearing feldspar, can be dated with the Ar–Ar method; however, it may often give only minimum ages due to strong resetting. In the studied example it gives a Precambrian minimum age of fossils, associated with this occurrence, and the age of the accompanying mineral muscovite indicates an age near 1.5 Ga. We encourage more dating attempts of buddingtonite, which will give valuable information of diagenetic or hydrothermal events.
04 Jan 2022
IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) – Newsletter 64
Ritsuro Miyawaki, Frédéric Hatert, Marco Pasero, and Stuart J. Mills
Eur. J. Mineral., 34, 1–6, https://doi.org/10.5194/ejm-34-1-2022, https://doi.org/10.5194/ejm-34-1-2022, 2022
17 Dec 2021
Vibrational spectroscopic study of three Mg–Ni mineral series in white and greenish clay infillings of the New Caledonian Ni-silicate ores
Emmanuel Fritsch, Etienne Balan, Sabine Petit, and Farid Juillot
Eur. J. Mineral., 33, 743–763, https://doi.org/10.5194/ejm-33-743-2021, https://doi.org/10.5194/ejm-33-743-2021, 2021
Short summary
Short summary
The study presents and discusses mid- and near-infrared spectra of three Mg–Ni mineral series (serpentine-like and talc-like minerals, sepiolite) commonly found in reactivated faults and sequences of clay infillings of the New Caledonian Ni-silicate deposits. This spectroscopic study sheds light on the nature of the residual mineral phases found in the clay infillings (serpentine-like minerals) and reveals the aptitude of the newly formed minerals (talc-like minerals and sepiolite) to store Ni.
03 Dec 2021
Ellinaite, CaCr2O4, a new natural post-spinel oxide from Hatrurim Basin, Israel, and Juína kimberlite field, Brazil
Victor V. Sharygin, Sergey N. Britvin, Felix V. Kaminsky, Richard Wirth, Elena N. Nigmatulina, Grigory A. Yakovlev, Konstantin A. Novoselov, and Mikhail N. Murashko
Eur. J. Mineral., 33, 727–742, https://doi.org/10.5194/ejm-33-727-2021, https://doi.org/10.5194/ejm-33-727-2021, 2021
Short summary
Short summary
Ellinaite, a natural analog of β-CaCr2O4, was discovered at Hatrurim Basin, Israel, and in an inclusion within the super-deep diamond from the Sorriso Creek placer, Brazil. Chemical composition, structural data and physical properties are given for this mineral. It is related to multiple oxides AB2O4 with tunnel structure. This group now includes eight minerals. The overview of ellinaite from all localities suggests different PT–X–fO2 conditions for the mineral and its host rocks.