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Müllerite

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Collectors Summary

Color

gelb mit Tendenz zu rötlich-orange

Streak color

blaßgelb

Lustre

Halbdiamantglanz, Fettglanz

Hardness (Mohs)

Cleavages

vollkommen {001}

Fracture

unregelmäßig

Crystal System

trigonal, P312

Morphology

Müllerit kommt als hexagonale Platten und dünne Platten mit einem Durchmesser von bis zu 0,2 mm, ineinander verwachsene kugelförmige Cluster und verstreute Flocken vor. Die wichtigsten beobachteten Formen sind {100} und {001}.

Chemism

Chemical formula

Pb₂Fe³⁺(Te⁶⁺O₆)Cl

Empirical formula (analysis)

Pb_1.83Ag_0.26Fe_0.93Al_0.03Cu_0.02Te⁶⁺_0.95O_5.56Cl_1.30I_0.14

Chemical composition

Blei, Chlor, Eisen, Tellur, Sauerstoff

Unit weight: 735.291912366 u; Number of atoms in the formula: 11.02

Info

Empirical formula:

Pb_1.83Ag_0.26Fe_0.93Al_0.03Cu_0.02Te_0.95O_5.56Cl_1.30I_0.14

Element	Symbol	Weight%	Atoms	Atoms%	Atom weight (u)	Sum weight (u)
Oxygen	O	12.10	5.56	50.45	15.9994300	88.9568308
Aluminium	Al	0.11	0.03	0.27	26.9815382	0.8094461
Chlorine	Cl	6.27	1.3	11.80	35.4532000	46.0891600
Iron	Fe	7.06	0.93	8.44	55.8452000	51.9360360
Copper	Cu	0.17	0.02	0.18	63.5463000	1.2709260
Silver	Ag	3.81	0.26	2.36	107.8682200	28.0457372
Tellurium	Te	16.49	0.95	8.62	127.6030000	121.2228500
Iodine	I	2.42	0.14	1.27	126.9044730	17.7666262
Lead	Pb	51.57	1.83	16.61	207.2100000	379.1943000

Search for minerals with similar chemistry

Strunz 9th edition incl. updates

7.BC.

7: Sulfate (Selenate, Tellurate, Chromate, Molybdate, Wolframate)
B: Sulfate (Selenate, etc.) mit weitere Anionen, ohne H₂O
C: Mit mittelgroßen und großen [Kationen]

IMA status

anerkannt - CNMNC Newsletter 52 (2019)

Mineral status

anerkanntes Mineral

Optical Properties

Color	gelb mit Tendenz zu rötlich-orange
Streak color	blaßgelb
Lustre	Halbdiamantglanz, Fettglanz

Crystallography

Crystal System	trigonal
Class (H-M)	3₁2
Space Group number	149
Space Group	P312
Cell parameters a (Å)	5.2043(3)
Cell parameters b (Å)	-
Cell parameters c (Å)	8.963(1)
Cell parameters a/b or c/a	1.722
Cell parameters c/b	-
Z	1
Volumne (Å³)	210.237
Kristall structure	Das Fe³⁺ Analog von Backit; Struktur ermittelt
X-Ray Powder Diffraction	4.495(40), 4.009(14), 3.174(100), 2.597(54), 2.247(20), 2.009(32), 1.697(25), 1.590(31)
	Calculated from d-spacing and intensity at 0.1541838 nm (Cu)
Morphology	Müllerit kommt als hexagonale Platten und dünne Platten mit einem Durchmesser von bis zu 0,2 mm, ineinander verwachsene kugelförmige Cluster und verstreute Flocken vor. Die wichtigsten beobachteten Formen sind {100} und {001}.

Physical Properties

Hardness (Mohs)	~2
Density (g/cm³)	5.812 (berechnet)
	5.807 ( ρ calc. Mineralienatlas )
Cleavages	vollkommen {001}
Fracture	unregelmäßig
Tenacity	spröde

(Co-)Type locality

USA /Kalifornien (California)/San Bernardino Co./Baker /Otto Mountain /Aga Mine

USA /Kalifornien (California)/San Bernardino Co./Baker /Otto Mountain /Bird Nest drift

USA /Kalifornien (California)/San Bernardino Co./Baker /Otto Mountain /Bird Nest E3

USA /Kalifornien (California)/San Bernardino Co./Baker /Otto Mountain /Library Mine

Type material

Das Typusmaterial befindet sich in den mineralogischen Sammlungen des Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, California 90007, USA, Katalognummern 73609 (SW Cut), 73610 (Ader E3), 73611 (Bird Nest drift) und 73612 (Aga Mine) sowie in den Museen Victoria, GPO Box 666, Melbourne 3001, Victoria, Australien, Exemplarnummer M54913 (Aga Mine)

Preface

Author (Name, Year)

Stuart J. Mills, Anthony R. Kampf, Koichi Momma, Robert M. Housley und Joseph Marty (2019)

References

Stuart J. Mills; Anthony R. Kampf; Koichi Momma; Robert M. Housley; Joseph Marty: Müllerite, the Fe-analogue of backite from Otto Mountain, California, USA. The Canadian Mineralogist Vol. 58, Nr. 4 (2020) S. 413-419.

Mills, S.J., Kampf, A.R., Momma, K., Housley, R.M. and Marty, J. (2019) Müllerite, IMA 2019-060. CNMNC Newsletter No. 52; Mineralogical Magazine, 83, https://doi.org/10.1180/mgm.2019.73

Related minerals "Strunz Classification" (9. Edition) [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Backite	Pb₂AlTeO₆Cl trigonal : 3₁2 : P312	7.BC.
Mojaveite	Cu₆[Te⁶⁺O₄(OH)₂](OH)₇Cl trigonal : 3 : R3	7.BC.
Adranosite-(Al)	(NH₄)₄NaAl₂(SO₄)₄Cl(OH)₂ tetragonal : 4/mmm : I4₁/acd	7.BC.
Müllerite	Pb₂Fe³⁺(Te⁶⁺O₆)Cl trigonal : 3₁2 : P312	7.BC.
D'Ansite	Na₂₁MgCl₃(SO₄)₁₀ kubisch : 43m : I43d	7.BC.05
D'Ansite-(Fe)	Na₂₁Fe(SO₄)₁₀Cl₃ kubisch : 43m : I43d	7.BC.05
D'Ansite-(Mn)	Na₂₁Mn²⁺(SO₄)₁₀Cl₃ kubisch : 43m : I43d	7.BC.05
Alunite	KAl₃(SO₄)₂(OH)₆ trigonal : 3m : R3m	7.BC.10
Huangite	Ca_0.5Al₃[(OH)₆\|(SO₄)₂] trigonal : 3m : R3m	7.BC.10
Jarosite	KFe³⁺₃(SO₄)₂(OH)₆ trigonal : 3m : R3m	7.BC.10
Walthierite	Ba_0.5Al₃(SO₄)₂(OH)₆ trigonal : 3m : R3m	7.BC.10
Natroalunite-1c	Na₂Al₃(SO₄)₂(OH)₆ trigonal : 3m : R3m	7.BC.10
Osarizawaite	Pb(Al₂Cu²⁺)(SO₄)₂(OH)₆ trigonal : 3m : R3m	7.BC.10
Dorallcharite	(Tl,K)Fe³⁺₃[(OH)₆\|(SO₄)₂] trigonal : 3m : R3m	7.BC.10
Natrojarosite	NaFe³⁺₃(SO₄)₂(OH)₆ trigonal : 3m : R3m	7.BC.10
Ammonioalunite	NH₄Al₃(SO₄)₂(OH)₆ trigonal : 3m, 3m : R3m, R3m	7.BC.10
Beaverite-(Cu)	Pb(Fe³⁺₂Cu)(SO₄)₂(OH)₆ trigonal : 3m : R3m	7.BC.10
Plumbojarosite	PbFe₆³⁺(SO₄)₄(OH)₁₂ trigonal : 3m : R3m	7.BC.10
Ammoniojarosite	NH₄Fe³⁺₃(SO₄)₂(OH)₆ trigonal : 3m : R3m	7.BC.10
Argentojarosite	AgFe³⁺₃(SO₄)₂(OH)₆ trigonal : 3m : R3m	7.BC.10
Beaverite-(Zn)	Pb(Fe³⁺₂Zn)(SO₄)₂(OH)₆ trigonal : 3m : R3m	7.BC.10
Natroalunite-2c	NaAl₃(SO₄)₂(OH)₆ trigonal : 3m : R3m	7.BC.10
Schlossmacherite	(H₃O,Ca)Al₃(AsO₄,SO₄)₂(OH)₆ trigonal : 3m : R3m	7.BC.10
Hydronium jarosite	(H₃O)Fe³⁺₃(SO₄)₂(OH)₆ trigonal : 3m : R3m	7.BC.10
Ye'elimite	Ca₄Al₆O₁₂(SO₄) kubisch : 432 : I4₁32	7.BC.15
Nabokoite	Cu₇²⁺Te⁴⁺O₄(SO₄)₅·KCl tetragonal : 4/mmm : P4/ncc	7.BC.20
Atlasovite	KCu₆²⁺Fe³⁺Bi³⁺[O₄\|Cl\|(SO₄)₅] tetragonal : 4/mmm : P4/ncc	7.BC.20
Chlorothionite	K₂Cu(SO₄)Cl₂ orthorhombisch : mmm : Pnma	7.BC.25
Puninite	Na₂Cu₃O(SO₄)₃ monoklin : 2/m : C2/c	7.BC.30
Euchlorine	KNaCu₃²⁺(SO₄)₃O monoklin : 2/m : C2/c	7.BC.30
Fedotovite	K₂Cu²⁺₃(O\|(SO₄)₃) monoklin : 2/m : C2/c	7.BC.30
Kamchatkite	KCu₃²⁺OCl(SO₄)₂ orthorhombisch : mm2 : Pna2₁	7.BC.35
Piypite	K₄Cu₄O₂(SO₄)₄·(Na,Cu)Cl tetragonal : 4 : I4	7.BC.40
Eleomelanite	(K₂Pb)Cu₄O₂(SO₄)₄ monoklin : 2/m : P2₁/n	7.BC.45
Klyuchevskite	K₃Cu₃(Fe³⁺,Al)O₂(SO₄)₄ monoklin : 2 : I2	7.BC.45
Alumoklyuchevskite	K₃Cu₃(Al,Fe³⁺)O₂(SO₄)₄ monoklin : 2 : I2	7.BC.45
Caledonite	Pb₅Cu₂(CO₃)(SO₄)₃(OH)₆ orthorhombisch : mm2 : Pmn2₁	7.BC.50
Wherryite	Pb₇Cu₂(SO₄)₄(SiO₄)₂(OH)₂ monoklin : 2/m : C2/m	7.BC.55
Mammothite	Pb₆Cu₄AlSb⁵⁺O₂(SO₄)₂Cl₄(OH)₁₆ monoklin : 2 : C2	7.BC.60
Linarite	PbCu(SO₄)(OH)₂ monoklin : 2/m : P2₁/m	7.BC.65
Munakataite	Pb₂Cu₂(Se⁴⁺O₃)(SO₄)(OH)₄ monoklin : 2/m : P2₁/m	7.BC.65
Schmiederite	Pb₂Cu₂²⁺(Se⁴⁺O₃)(Se⁶⁺O₄)(OH)₄ monoklin : 2/m : P2₁/m	7.BC.65
Chenite	Pb₄Cu(SO₄)₂(OH)₆ triklin : 1 : P1	7.BC.70
Krivovichevite	Pb₃[Al(OH)₆](SO₄)(OH) trigonal : 3m : R3c	7.BC.75
'Anhydrokainite'	KMg(SO₄)Cl	7.BC.80
Balićžunićite	Bi₂O(SO₄)₂ triklin : 1 : P1	7.BC.90
Adranosite-(Fe)	(NH₄)₄NaFe³⁺₂(SO₄)₄Cl(OH)₂ tetragonal : 4/mmm : I4₁/acd	7.BC.90

Other languages

German	Müllerit
English	Müllerite

IMA Number

IMA 2019-060

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

German pages	DeWikiPedia - search for: Müllerit Google-Bilder-Suche - search for: Müllerit Mineralogisch-Petrographisches-Institut Hamburg - search for: Müllerit
English pages	Mindat - search for: Müllerite Webmineral - search for:Müllerite Handbook-of-Mineralogy - search for: Müllerite RRUFF - Raman, XRD and other mineral data - search for: Müllerite RRUFF - References and PDF downloads - search for: Müllerite American-Mineralogist-Crystal-Structure-Database - search for: Müllerite Athena - search for: Müllerite

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Müllerit
Crystal-Treasure.com - search for: Müllerit
Bosse - search for: Müllerit

Locations with GPS information