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Manganlotharmeyerite

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Manganlotharmeyerit
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Manganlotharmeyerit

Ein 2,5-mm-Druse als angeblich Manganlotharmeyerit verifiziert. Ojuela Mine, Mapimi, Durango, Mexiko

Copyright: Jason B. Smith
Contribution: Stefan 2010-10-22
Locality: Ojuela Mine / Mapimí / Mapimí, Municipio / Durango / Mexiko

Collectors Summary

Color braunrot, dunkles rotorange
Streak color Hellbraun
Hardness (Mohs) 3
Cleavages deutlich {001}
Fracture unregelmäßig
Crystal System monoklin, C2/m

Chemism

Chem­ical formula

Ca(Mn3+,Mg)2(AsO4)2(OH,H2O)2

Chem­ical com­po­si­tion

Arsen, Calcium, Magnesium, Mangan, Sauerstoff, Wasserstoff

Unit weight: 446.99537635 u; Number of atoms in the formula: 17.5

Info

Empirical formula:

Ca(Mn0.75Mg0.25)2(AsO4)2((OH)0.75(H2O)0.25)2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.56

2.5

14.29

1.0079470

2.5198675

Oxygen

O

35.79

10

57.14

15.9994300

159.9943000

Magnesium

Mg

2.72

0.5

2.86

24.3050600

12.1525300

Calcium

Ca

8.97

1

5.71

40.0784000

40.0784000

Manganese

Mn

18.44

1.5

8.57

54.9380499

82.4070749

Arsenic

As

33.52

2

11.43

74.9216020

149.8432040

Anal­y­sis wt%

Ø As2O5 : 53.41, V2O5 : 0.67, Fe2O3 : 0.91, Mn2O3 : 16.70, MgO : 3.95, NiO : 1.07, ZnO : 0.58, CaO : 12.42, H2O : 8.84 (Ref: Canadian Mineralogist 2002)

Strunz 9th edi­tion incl. updates

8.CG.15

8: Phosphate, Arsenate, Vanadate
C: Phosphate ohne weitere Anionen, mit H2O
G: Mit großen und mittelgroßen Kationen, RO4:H2O = 1:1
15:Tsumcorit-Gruppe

Lapis Clas­sifica­tion

VII/C.31-030

VII: PHOSPHATE, ARSENATE UND VANADATE ("Phosphate" des Registers immer einschließlich isotyper Arsenate und Vanadate!)
C: Wasserhaltige Phosphate, ohne fremde Anionen
31: Mittelgroße und große Kationen: Fe-Mn-Zn-Mg und Ca-(NH4) 1+; Tsumcorit/Gartrellit-Gruppe

Clas­sifica­tion by Hölzel

8.DK.261

8: PHOSPHATES ARSENATES VANADATES
D: Phosphates (+Anions +Water)
K: very large=2 - very small-medium=2,3
2: with Ca, monoclinic, Lotharmeyerite-Group

Dana 8th edi­tion

40.02.03.05

40: Hydrated Phosphates, etc
02: Hydrated Phosphates, etc where A++ (B++)2 (XO4) · x(H2O)
03: Roselite Subgroup (Monoclinic: P21/c)

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

Tsumcorite group

Optical Properties

Color

braunrot, dunkles rotorange

Streak color

Hellbraun

max. Birefrin­gence

0.069

Birefringence chart\! Manganlotharmeyerite title=Birefringence chart Manganlotharmeyerite

Michel-Levy Color Chart viewed according to the maximum birefringence (at 30μm). Mineral color is not taken into account. Click on the image to enlarge or change thickness.

RI value α / ω / n

1.785

RI value β

1.814

RI value γ / ε

1.854

Ri mean

1.818

2V angle

Biaxial (+) 85°

Crystallography

Crystal Sys­tem

monoklin

Class (H-M)

2/m

Space Group number

12

Space Group

C2/m

Cell param­e­ters a (Å)

9.043

Cell param­e­ters b (Å)

6.231

Cell param­e­ters c (Å)

7.389

Cell param­e­ters a/b or c/a

1.451

Cell param­e­ters c/b

1.186

Cell param­e­ters α

90°

Cell param­e­ters β

116.40

Cell param­e­ters γ

90°

Z

2

Volumne (ų)

372.927

X-Ray Pow­der Diffrac­tion

4.93(80),
3.426(60),
3.182(100),
2.927(70),
2.822(70),
2.718(80),
2.555(100),
2.134(70)

XRD chart Manganlotharmeyerite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

3

VHN (Hard­ness Vick­ers)

83 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.77(gemessen) 3.75 (berechnet)

3.98 ( ρ calc. Mineralienatlas )

Cleav­ages

deutlich {001}

Frac­ture

unregelmäßig

Tenac­ity

spröde

Preface

Asso­cia­tions

Tilasit, Calcit, Braunit

Author (Name, Year)

Brugger & Krivovichev & Kolitsch & Meisser & Andrut & Ansermet & Burns

References

Canadian Mineralogist 40 (2002), 1597

American Mineralogist 88 (2003), 1627

IMA group assignments

Other languages

German

Manganlotharmeyerit

Spanish

Manganlotharmeyerita

English

Manganlotharmeyerite

French

Manganlotharmeyerite

Spanish

Manganolotharmeyerita

Russian

Манганлотармейерит

Traditional Chinese

砷鎂鈣錳石

Simplified Chinese

砷镁钙锰石

Alternative Name

Manganolotharmeyerite

German

Mn-Lotharmeyerit

Mn-Lotharmeyerite

CNMNC (IMA)-Number

IMA 2001-026

CNMNC symbol

Symbol

Mlmy

Automatic Links to external internet sources (Responsibility is with the operator)

German pages

DeWikiPedia - search for: Manganlotharmeyerit
Google-Bilder-Suche - search for: Manganlotharmeyerit
Mineralienatlas.de (Forum) - search for: Manganlotharmeyerit

English pages

Mindat - search for: Manganlotharmeyerite
Webmineral - search for:Manganlotharmeyerite
Handbook-of-Mineralogy - search for: Manganlotharmeyerite
RRUFF - Raman, XRD and other mineral data - search for: Manganlotharmeyerite
RRUFF - References and PDF downloads - search for: Manganlotharmeyerite
American-Mineralogist-Crystal-Structure-Database - search for: Manganlotharmeyerite
Strahlen.org - search for: Manganlotharmeyerite

Russian pages

Webmineral.ru - search for: Манганлотармейерит

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Manganlotharmeyerit
Crystal-Treasure.com - search for: Manganlotharmeyerit
Bosse - search for: Manganlotharmeyerit
Edelsteine Neuburg - Gundolf Fischer - search for: Manganlotharmeyerit

Locations with GPS information