Braccoite R220040

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Record 566 of 4216

	Name: Braccoite RRUFF ID: R220040 Ideal Chemistry: NaMn²⁺₅[Si₅O₁₄(OH)](AsO₃)(OH) Locality: Valletta mine, Maira Valley, Piedmont, Italy Source: Fernando Cámara Owner: Fernando Cámara Description: Subhedral crystals in brownish-red thin masses. Type sample reported in Cámara et al (2015) Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Mineral Group: [ Saneroite (2) ]

CHEMISTRY

RRUFF ID:	R220040.2
Sample Description:	Microprobe Fragment
Measured Chemistry:	Na_1.06(Mn²⁺_4.46Mn³⁺_0.32Mg_0.19Al_0.01Ca_0.01)[(Si_5.36As⁵⁺_0.48V⁵⁺_0.15)O₁₇(OH)](OH_0.98F_0.02)

RAMAN SPECTRUM

RRUFF ID:

Sample Description:

Unoriented sample

DOWNLOADS:

	Raman Data (Processed)
	RRUFF File
	Raman Data (RAW)
	RRUFF File

BROAD SCAN WITH SPECTRAL ARTIFACTS

RRUFF ID:

R220040

Wavelength:

Sample Description:

Unoriented sample

Instrument settings:

Jobin-Yvon Horiba Labram 632nm @ 100% of 20mW

DOWNLOADS:

	Raman Data (RAW)
	RRUFF File

POWDER DIFFRACTION

RRUFF ID:

R220040

Sample Description:

Calculated powder profile

Cell Refinement Output:

a: 9.756(6)Å b: 9.961(7)Å c: 9.087(7)Å
alpha: 92.23(5)° beta: 117.27(5)° gamma: 105.21(4)° Volume: 742.2(9)Å³ Crystal System: unknown

File Type Information

Output file from the Bruker D8 Advance instrument. Includes device headers and XY data.

DOWNLOADS:

	X-ray Data (XY - RAW)
	RRUFF File

REFERENCES for Braccoite
American Mineralogist Crystal Structure Database Record: [view record]
Williams P A, Hatert F, Pasero M, Mills S J (2013) IMA Commission on new minerals, nomenclature and classification (CNMNC) Newsletter 18. New minerals and nomenclature modifications approved in 2013, Mineralogical Magazine, 77, 3249-3258 [view file]
Cámara F, Bittarello E, Ciriotti M E, Nestola F, Radica F, Marchesini M (2015) As-bearing new mineral species from Valletta mine, Maira Valley, Piedmont, Italy: II. Braccoite, NaMn²⁺₅[Si₅AsO₁₇(OH)](OH), description and crystal structure, Mineralogical Magazine, 79, 171-189 [view file]
Belakovskiy D I, Uvarova Y, Gagne O C (2016) New mineral names, American Mineralogist, 101, 1012-1019 [view file]