Manganlotharmeyerite Mineral Data

[Newest Minerals] [Equipment] [Analytical Services] [About Us] [Mineral Gallery] [eBay Store]
See Also: [Diamond Crystals] [Mineral News] [Hudson Institute] [Minerals on CDROM]
Rare Minerals, Meteorites, Equipment and Analytical Services
Excalibur Mineral Company, World leaders in the supply of rare species
Serving the scientific and collector communities since 1974

General Manganlotharmeyerite Information

Chemical Formula:

Ca(Mn+++,Mg,)2(AsO4)2(OH,H2O)2

Composition:

Molecular Weight = 414.80 gm

Calcium 8.70 % Ca 12.17 % CaO

Magnesium 2.34 % Mg 3.89 % MgO

Manganese 13.24 % Mn 19.03 % Mn₂O₃

Arsenic 36.12 % As 55.41 % As₂O₅

Hydrogen 1.02 % H 9.12 % H₂O

Oxygen 38.57 % O

______ ______

100.00 % 99.61 % = TOTAL OXIDE

Empirical Formula:

Ca_0.92(Mn³⁺_0.5)2(Mg_0.2)2(As)O₁₀H_4.2

Environment:

In carbonate-hosted manganese ore.

IMA Status:

Approved IMA 2002 (Dana # Added)

Locality:

Starlera Fe-Mn deposit, Val Ferrera, Eastern Alps, Switzerland. Link to MinDat.org Location Data.

Name Origin:

Named as the Mn-dominant lotharmeyerite.

Synonym:

IMA2001-026

Manganlotharmeyerite Image

Images:

Manganlotharmeyerite

Comments: Scanning electron micrograph of subparallel crystals of manganlotharmeyerite.
Location: Massive braunite ores at the Starlera Mn deposit in the Eastern Alps of Switzerland. Scale: See Picture.
© Canadian Mineralogist

Manganlotharmeyerite Crystallography

Axial Ratios:

a:b:c =1.4511:1:1.1857

Cell Dimensions:

a = 9.043, b = 6.2314, c = 7.3889, Z = 2; beta = 116.392° V = 372.97 Den(Calc)= 3.69

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 2.555(1)(221,312), 3.182(1)(112), 2.718(0.8)(311),4.93(0.8)(110), 2.134(0.7)(202,221), 2.822(0.7)(021), 2.927(0.7)(201),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Brugger J , Krivovichev S V , Kolitsch U , Meisser N , Andrut M , Ansermet S , Burns P C , The Canadian Mineralogist , 40 (2002) p.1597-1608, Description and crystal structure of manganlotharmeyerite,

Physical Properties of Manganlotharmeyerite

Cleavage:

{001} Distinct

Color:

Brownish red, Dark reddish orange.

Density:

3.77

Diaphaneity:

Transparent to Translucent

Fracture:

Brittle - Irregular - Very brittle fracture producing irregular fragments

Habit:

Aggregates - Made of numerous individual crystals or clusters.

Habit:

Platy - Sheet forms (e.g. micas).

Hardness:

3 - Calcite

Luster:

Adamantine

Streak:

light brown

Optical Properties of Manganlotharmeyerite

Gladstone-Dale:

CI meas= -0.026 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.048 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2216,KPDmeas= 0.2169,KC= 0.2114
Ncalc = 1.78 - 1.8

Optical Data:

Biaxial (+), a=1.785, b=1.814, g=1.854, bire=0.0690, 2V(Calc)=84, 2V(Meas)=~85. Dispersion r < v weak.

Calculated Properties of Manganlotharmeyerite

Electron Density:

Bulk Density (Electron Density)=3.60 gm/cc
note: Specific Gravity of Manganlotharmeyerite =3.77 gm/cc.

Fermion Index:

Fermion Index = 0.0026478418
Boson Index = 0.9973521582

Photoelectric:

PE_{Manganlotharmeyerite}= 29.13 barns/electron
U=PE_{Manganlotharmeyerite} x rElectron Density= 104.84 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Manganlotharmeyerite is Not Radioactive

Manganlotharmeyerite Classification

Dana Class:

40.02.03.05 (40)Hydrated Phosphates, etc

(40.02)where A++ (B++)2 (XO4) · x(H2O)

(40.02.03)Roselite Subgroup (Monoclinic: P21/c)

40.02.03.01 Roselite Ca2(Co,Mg)(AsO4)2•2(H2O) P 2₁/c 2/m

40.02.03.02 Brandtite Ca2(Mn,Mg)(AsO4)2•2(H2O) P 2₁/c 2/m

40.02.03.03 Zincroselite Ca2Zn(AsO4)2•2(H2O) P 2₁/c 2/m

40.02.03.04 Wendwilsonite Ca2(Mg,Co)(AsO4)2•2(H2O) P 2₁/c 2/m

40.02.03.05 Manganlotharmeyerite! Ca(Mn,Mg,)2(AsO4)2(OH,H2O)2 C 2/m 2/m

Strunz Class:

08.CG.15 08 - PHOSPHATES, ARSENATES, VANADATES

08.C - Phosphates without Additional Anions, with H2O

08.CG -With large and medium-sized cations, RO4:H2O = 1:1

08.CG.15 Cobaltlotharmeyerite! Ca(Co,Fe,Ni)2(AsO4)2(OH,H2O)2 C 2/m 2/m

08.CG.15 Ferrilotharmeyerite Ca(Zn,Cu)(Fe,Zn)(AsO4)2(OH,H2O)2 C 2/m 2/m

08.CG.15 Cabalzarite! Ca(Mg,Al,Fe)2(AsO4)2(H2O,OH)2 C 2/m 2/m

08.CG.15 Mawbyite Pb(FeZn)2(AsO4)2(OH,H2O)2 C 2/m 2/m

08.CG.15 Lotharmeyerite CaZnMn(AsO3OH)4(OH)3 C 2/m,C 2,Cm Mono

08.CG.15 Mounanaite PbFe2(VO4)2(OH)2 P1 1

08.CG.15 Tsumcorite PbZnFe(AsO4)2•(H2O) C 2/m 2/m

08.CG.15 Thometzekite Pb(Cu,Zn)2(AsO4)2•2(H2O) C 2/m 2/m

08.CG.15 Cobalttsumcorite! Pb(Co,Fe)2(AsO4)2(OH,H2O)2 C 2/m 2/m

08.CG.15 Manganlotharmeyerite! Ca(Mn,Mg,)2(AsO4)2(OH,H2O)2 C 2/m 2/m

08.CG.15 Nickellotharmeyerite! Ca(Ni,Fe,Co)2(AsO4)2(OH,H2O)2 C 2/m 2/m

08.CG.15 Krettnichite! PbMn2(VO4)2(OH)2 C 2/m 2/m

08.CG.15 Schneebergite! Bi(Co,Ni)2(AsO4)2(OH,H2O)2 C 2/m 2/m

08.CG.15 Nickelschneebergite! Bi(Ni,Co)2(AsO4)2(OH,H2O)2 C 2/m 2/m

Other Manganlotharmeyerite Information

References:

NAME( CanMin, v 41, p 818) PHYS. PROP.(CanMin, v 41, p 818) OPTIC PROP.(CanMin, v 41, p 818)

See Also:

Links to other databases for Manganlotharmeyerite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - Google Images
4 - Google Scholar
5 - Handbook of Mineralogy (MinSocAm)
6 - Handbook of Mineralogy (UofA)
7 - MinDAT
8 - MinMax(Deutsch)
9 - MinMax(English)
10 - Mineralienatlas (Deutsch)
11 - QUT Mineral Atlas
12 - Ruff.Info

Search for Manganlotharmeyerite using:

[ALTAVISTA] [AOL] [All-The-Web] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Manganlotharmeyerite :

AA Mineral Specimens

B & L Fine Minerals

Crystalarium.com

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

Dakota Matrix

Desert Winds Gems and Minerals

John Betts Fine Minerals

Mason's Minerals

Mineral News

Mineral of the Month Club

Wrights Rock Shop

Translate Manganlotharmeyerite Mineral Data :

Ask about Manganlotharmeyerite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

Print or Cut-and-Paste your Manganlotharmeyerite Specimen Label here :

Manganlotharmeyerite

Ca(Mn+++,Mg,)2(AsO4)2(OH,H2O)2
Dana No: 40.02.03.05 Strunz No: 08.CG.15
Locality:

Notes: