,32.2531,-110.948 R050552 - RRUFF Database: Raman, X-ray, Infrared, and Chemistry

Ramsdellite R050552

Name: Ramsdellite
RRUFF ID: R050552
Ideal Chemistry: MnO₂
Locality: Lake Valley, Sierra County, New Mexico, USA
Source: Dave Bunk Minerals
Owner: RRUFF
Description: Black bladed crystals
Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis.

Mineral Group: [ Ramsdellite (2) ]

CHEMISTRY

RRUFF ID:	R050552.2
Sample Description:	Microprobe fragment
Measured Chemistry:	(Mn⁴⁺_0.98Al_0.02)_Σ=1(O_1.98(OH)_0.02)_Σ=2

RAMAN SPECTRUM

RRUFF ID:

Sample Description:

Unoriented sample

DOWNLOADS:

To download sample data,
please select a specific
orientation angle.

BROAD SCAN WITH SPECTRAL ARTIFACTS

RRUFF ID:

R050552

Wavelength:

Sample Description:

Unoriented sample

Instrument settings:

Thermo Almega XR 532nm @ 100% of 150mW

DOWNLOADS:

	Raman Data (RAW)
	RRUFF File

INFRARED SPECTRUM (Attenuated Total Reflectance)

RRUFF ID:

R050552.1

Instrument settings:

SensIR Durascope on a Nicolet Magna 860 FTIR

Resolution:

DOWNLOADS:

	Infrared Data (Processed)
	RRUFF File

POWDER DIFFRACTION

RRUFF ID:

R050552.1

Sample Description:

Powder, cell parameters are from single crystal

Cell Refinement Output:

a: 9.26(2)Å b: 2.840(5)Å c: 4.557(9)Å
alpha: 90° beta: 90° gamma: 90° Volume: 119.8(3)Å³ Crystal System: orthorhombic

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 Ramsdellite
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]
Ramsdell L S (1932) An X-ray study of psilomelane and wad, American Mineralogist, 17, 143-149 [view file]
Fleischer M, Richmond W E (1943) The manganese oxide minerals: a preliminary report, Economic Geology, 38, 269-286 [view file]
Fleischer M (1943) New mineral names, American Mineralogist, 28, 615-615 [view file]
Fleischer M, Richmond W E, Evans H T (1962) Studies of the manganese oxides. V. Ramsdellite, MnO₂, an orthorhombic dimorph of pyrolusite, American Mineralogist, 47, 47-58 [view file]
Majmundar H H (1969) Ramsdellite and groutite from Nova Scotia, The Canadian Mineralogist, 9, 718-720 [view file]
Potter R M, Rossman G R (1979) The tetravalent manganese oxides: identification, hydration, and structural relationships by infrared spectroscopy, American Mineralogist, 64, 1199-1218 [view file]
Kohler T, Armbruster T, Libowitzky E (1997) Hydrogen bonding and Jahn-Teller distortion in groutite, α-MnOOH, and manganite, γ-MnOOH, and their relations to the manganese dioxides ramsdellite and pyrolusite, Journal of Solid State Chemistry, 133, 486-500
Post J E, Heaney P J (2004) Neutron and synchrotron X-ray diffraction study of the structures and dehydration behaviors of ramsdellite and "groutellite", American Mineralogist, 89, 969-975 [view file]
Post J E, McKeown D A, Heaney, P J (2020) Raman spectroscopy study of manganese oxides: Tunnel structures, American Mineralogist, 105, 1175-1190 [view file]

REFERENCES for Ramsdellite

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]

Ramsdell L S (1932) An X-ray study of psilomelane and wad, American Mineralogist, 17, 143-149 [view file]

Fleischer M, Richmond W E (1943) The manganese oxide minerals: a preliminary report, Economic Geology, 38, 269-286 [view file]

Fleischer M (1943) New mineral names, American Mineralogist, 28, 615-615 [view file]

Fleischer M, Richmond W E, Evans H T (1962) Studies of the manganese oxides. V. Ramsdellite, MnO₂, an orthorhombic dimorph of pyrolusite, American Mineralogist, 47, 47-58 [view file]

Majmundar H H (1969) Ramsdellite and groutite from Nova Scotia, The Canadian Mineralogist, 9, 718-720 [view file]

Potter R M, Rossman G R (1979) The tetravalent manganese oxides: identification, hydration, and structural relationships by infrared spectroscopy, American Mineralogist, 64, 1199-1218 [view file]

Kohler T, Armbruster T, Libowitzky E (1997) Hydrogen bonding and Jahn-Teller distortion in groutite, α-MnOOH, and manganite, γ-MnOOH, and their relations to the manganese dioxides ramsdellite and pyrolusite, Journal of Solid State Chemistry, 133, 486-500

Post J E, Heaney P J (2004) Neutron and synchrotron X-ray diffraction study of the structures and dehydration behaviors of ramsdellite and "groutellite", American Mineralogist, 89, 969-975 [view file]

Post J E, McKeown D A, Heaney, P J (2020) Raman spectroscopy study of manganese oxides: Tunnel structures, American Mineralogist, 105, 1175-1190 [view file]