Howardevansite R130739

		Name: Howardevansite RRUFF ID: R130739 Ideal Chemistry: NaCu²⁺Fe³⁺₂(VO₄)₃ Locality: 'Y' Fumerol, Izalco Volcano, Sonsonate Department, El Salvador Source: Rock Currier [view label] Owner: RRUFF Description: Black granular or tabular crystals embeded in thénardite, associated with black bladed or prismatic lyonsite. Crystal is twinned by a 2-fold rotation about [-1 -1 1]. Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction.
Mineral Group: [ Howardevansite (1) ]

RAMAN SPECTRUM

RRUFF ID:

Sample Description:

Unoriented sample

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orientation angle.

BROAD SCAN WITH SPECTRAL ARTIFACTS

RRUFF ID:

R130739

Wavelength:

Sample Description:

Unoriented sample

Instrument settings:

Thermo Almega XR 532nm @ 100% of 150mW

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	Raman Data (Processed)
	RRUFF File

POWDER DIFFRACTION

RRUFF ID:

R130739.9

Sample Description:

Single crystal, powder profile is calculated

Cell Refinement Output:

a: 8.186(4)Å b: 9.704(4)Å c: 6.627(3)Å
alpha: 103.61(2)° beta: 102.09(3)° gamma: 106.59(2)° Volume: 468.2(2)Å³ Crystal System: triclinic

File Type Information

Calculated diffraction file.

File Type Information

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

DOWNLOADS:

	DIF File
	X-ray Data (XY - RAW)
	RRUFF File

REFERENCES for Howardevansite
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]
Hughes J M, Drexler J W, Campana C F, Malinconico M L (1988) Howardevansite, NaCu²⁺Fe³⁺₂(VO₄)^3-₃, a new fumarolic sublimate from Izalco volcano, El Salvador: descriptive mineralogy and crystal structure, American Mineralogist, 73, 181-186 [view file]