Messelite R210009
Name: Messelite
RRUFF ID: R210009
Ideal Chemistry: Ca2Fe2+(PO4)2·2H2O
Locality: Palermo mine, Grafton Co., New Hampshire
Source: Tom Loomis [view label]
Owner: RRUFF
Description: Aggregates of white to colorless bladed or thin-platy crystals, associated with vivianite and acicular strunzite.
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Mineral Group: [ fairfieldite (16) ]
CHEMISTRY 
RRUFF ID: R210009.2
Sample Description: Microprobe Fragment
Measured Chemistry: Ca1.95(Fe0.58Mn0.37Mg0.04)Σ0.99(P1.02O4)2.2H2O. Based on 10 O atoms. H2O added as the ideal value.
Microprobe Data File: [ Download Excel File ]
POWDER DIFFRACTION 
RRUFF ID: R210009
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 5.518(9)Å    b: 5.792(10)Å    c: 6.607(11)Å
alpha: 89.91(9) °    beta: 102.27(8)°    gamma: 108.89(7)°   Volume: 194.7(8)Å3    Crystal System: triclinic
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REFERENCES for Messelite

American Mineralogist Crystal Structure Database Record: [view record]

Anthony J W, Bideaux R A, Bladh K W, and Nichols M C (1990) Handbook of Mineralogy, Mineral Data Publishing, Tucson Arizona, USA, by permission of the Mineralogical Society of America. [view file]

Muthmann W (1890) Messelit, ein neues Mineral, Zeitschrift für Krystallographie und Mineralogie, 17, 93-94   [view file]

Frondel C (1955) Neomesselite and beta-roselite: two new members of the fairfieldite group, American Mineralogist, 40, 828-833   [view file]

Fleischer M (1959) New mineral names, American Mineralogist, 44, 464-470   [view file]

Fleck M, Kolitsch U, Hertweck B (2002) Natural and synthetic compounds with kröhnkite-type chains: review and classification, Zeitschrift für Kristallographie, 217, 435-443

Fleck M, Kolitsch U (2003) Natural and synthetic compounds with kröhnkite-type chains. An update, Zeitschrift für Kristallographie, 218, 553-567

Dyar M D, Jawin E R, Breves E, Marchand G, Nelms M, Lane M D, Mertzman S A, Bish D L and Bishop J L (2014) Mössbauer parameters of iron in phosphate minerals: Implications for interpretation of martian data, American Mineralogist, 99, 914-942   [view file]