...Sergey N. Britvin; Sergey V. Krivovichev; Thomas Armbruster Abstract Ferromerrillite, ideally Ca 9 NaFe 2+ (PO 4 ) 7 , is a new mineral related to the whitlockite group. It occurs as a common accessory phase in several Martian meteorites classified as basaltic and olivine-phyric shergottites...

... into two subgroups: merrillite (merrillite, ferromerrillite, keplerite and matyhite) and whitlockite (whitlockite, strontiowhitlockite, wopmayite and hedegaardite). Cerite-(La) has been renamed ferricerite-(La). The new nomenclature has been approved by the International Mineralogical Association...

... for 11 new minerals, including alfredopetrovite, bussyite-(Y), colinowensite, esquireite, ferromerrillite, fluornatropyrochlore, fluor-schorl, hogarthite, shilovite, tapiaite, waimirite-(Y). * All minerals marked with an asterisk have been approved by the IMA CNMMC. † For a complete...

...Figure 7. Raman spectra of ( a ) keplerite (the Marjalahti pallasite), ( b ) merrillite (the Brahin pallasite), and ( c ) ferromerrillite (the Los Angeles shergottite). The spectra ( b and c ) are shifted along the x -axis with the relative offset of 100 cm −1 . (Color online.) ...

...), phosphides were replaced by Fe 2+ -bearing phosphates, which were changed by association of Fe 3+ -bearing phosphates. Our investigations of phosphide-bearing rocks from Jordan and Israel show that other minerals of the merrillite group (merrillite, keplerite, ferromerrillite and possibly matyhite), also...

... . Britvin , S.N. , Krivovichev , S.V. , and Armbruster , T. ( 2016 ) Ferromerrillite, Ca 9 NaFe 2+ (PO 4 ) 7 , a new mineral from the Martian meteorites, and some insights into merrillite-tuite transformation in shergottites . European Journal of Mineral-ogy , 28 , 125 – 136 . Dowty...

..., depending on local chemical and physical parameters that could have varied from place to place in the solidifying reservoir. Chlorapatite and merrillite–ferromerrillite have commonly been observed to coexist in stony meteorites, and their relative amounts were assumed to be controlled...

...Fig. 10. Ternary diagram illustrating the composition variations of extra-terrestrial merrillites versus Ca-merrillite, matyhite, Na-merrillite, ferromerrillite, and REE -merrillite (modified from fig. 7 in Shearer et al. , 2015 ). ...

.... In the phosphate zone, minerals of the merrillite group 367 (merrillite and ferromerrillite characteristic of meteorites) were replaced by Fe3+-bearing 368 deynekoite (Galuskin et al. 2023b). 369 For the formation of a significant concentration of phosphides on Earth, a combination of 370 several conditions...

... minerals and fluorapatite, forming in places fine-grained mosaics. Lazulite, phosphosiderite, members of the phosphoferrite–kryzhanovskite series, jahnsite-group minerals, whitlockite and ferromerrillite, ferrostrunzite, ludlamite, beraunite, arrojadite-group minerals and mitridatite are present...

... meteorites Daubréelite FeCr 2 S 4 meteorites Davisite CaScAlSiO 6 meteorites Dmitryivanovite CaAl 2 O 4 meteorites Farringtonite Mg 3 (PO 4 ) 2 meteorites, the Moon Ferromerrillite Ca 9 NaFe 2+ (PO 4 ) 7 Martian meteorite; crustal occurrence doubted Florenskyite FeTiP...

...-dominant, but it incorporates up to 12 mol% of the Fe 2+ ferromerrillite component ( Jones et al. 2014 , their Table 2). Abundant, though volumetrically minor, sulfide-merrillite assemblages are found in CV3 carbonaceous chondrites ( Rubin and Grossman 1985 ), who propose that phosphate minerals formed...