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Chromphyllite

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Chromphyllit

grüne Kristalle mit Spaltflächen von Chromphyllit, Sljudjanka, Baikalsee, Irkutsk, Russland; BB < 1 mm

MinTreasure.com (Carsten Slotta)

Contribution: openpit 2020-03-19

Locality: Sljudjanka (Sludyanka; Slyudyanka) / Baikalsee / Irkutsk (Irkutskaja), Oblast / Sibirien, Föderationskreis / Russland

Collectors Summary

Color

smaragdgrün

Streak color

weißlich grün

Hardness (Mohs)

3.5

Cleavages

vollkommen {001}

Solubility

- HCl, HNO₃

Crystal System

monoklin, C2/c

Chemism

Chemical formula

K(Cr,Al)₂[(OH,F)₂|AlSi₃O₁₀]

Chemical composition

Aluminium, Chrom, Silicium, Fluor, Kalium, Sauerstoff, Wasserstoff

Unit weight: 436.826014425 u; Number of atoms in the formula: 20.5

Info

Empirical formula:

K(Cr_0.75Al_0.25)₂[((OH)_0.75F_0.25)₂AlSi₃O₁₀]

Element	Symbol	Weight%	Atoms	Atoms%	Atom weight (u)	Sum weight (u)
Hydrogen	H	0.35	1.5	7.32	1.0079470	1.5119205
Oxygen	O	42.12	11.5	56.10	15.9994300	183.9934450
Fluorine	F	2.17	0.5	2.44	18.9984033	9.4992016
Aluminium	Al	9.27	1.5	7.32	26.9815382	40.4723073
Silicon	Si	19.29	3	14.63	28.0855300	84.2565900
Potassium	K	8.95	1	4.88	39.0983100	39.0983100
Chromium	Cr	17.85	1.5	7.32	51.9961600	77.9942400

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Analysis wt%

Ø SiO₂ : 40.24, Al₂O₃ : 14.11, Cr₂O₃ : 23.99, V₂O₃ : 2.08, MgO : 1.60, BaO : 4.83, K₂O : 8.54, H₂O : 3.32, F : 1.28 (Ref: Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva, 1904-1974 97)

Strunz 9th edition incl. updates

9.EC.15

9: Silikate (Germanate)
E: Schichtsilikate (Phyllosilikate)
C: Schichtsilikate (Phyllosilikate) mit Glimmer Tafeln, zusammengesetzt aus tetrahedralen oder octahedralen Netzen
15:Muskovit-Gruppe

Lapis Classification

VIII/H.10-080

VIII: SILIKATE
H: Schichtsilikate
10: Glimmerartige Schicht-silikate mit Baugruppen [Si4O10] 4- und verwandte Strukturen; Glimmer-Gruppe; Seladonit/Muskovit-Reihe (Phengite)

Classification by Hölzel

9.EC.242

9: SILICATES
E: Phyllosilicates
C: Micas-Group

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

IMA Classification

Mica group ⇒ True micas

Optical Properties

Color	smaragdgrün
Streak color	weißlich grün
Diaphaneity (Transparency)	transparent
max. Birefringence	0.054
	$Birefringence chart\! Chromphyllite title=Birefringence chart Chromphyllite$ 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	1.619
RI value β	1.669
RI value γ / ε	1.673
Ri mean	1.654
2V angle	Biaxial (-) 31°

Crystallography

Crystal System	monoklin
Class (H-M)	2/m
Space Group number	15
Space Group	C2/c
Cell parameters a (Å)	5.32
Cell parameters b (Å)	9.07
Cell parameters c (Å)	20.50
Cell parameters a/b or c/a	0.587
Cell parameters c/b	2.260
Cell parameters α	90°
Cell parameters β	95.60
Cell parameters γ	90°
Z	4
Volumne (Å³)	984.453
X-Ray Powder Diffraction	9.94(60), 4.52(80), 2.86(50), 2.60(100), 2.40(60), 2.15(60), 1.648(50), 1.519(100)
	Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Crystals 3D

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Crystal Structure 3D

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Physical Properties

Hardness (Mohs)	3.5
VHN (Hardness Vickers)	129 (25g)
Density (g/cm³)	2.88
	2.947 ( ρ calc. Mineralienatlas )
Cleavages	vollkommen {001}
Tenacity	schneidbar
Instability	- HCl, HNO₃

(Co-)Type locality

Russland /Sibirien, Föderationskreis /Irkutsk (Irkutskaja), Oblast /Baikalsee /Sljudjanka (Sludyanka; Slyudyanka)/Pokhabikha-Tal /Pereval Marmorsteinbruch (Grube Kaber)

Preface

Author (Name, Year)

Reznitskiy & Sklyarov & Ushchapovskaya & Nartova & Evsyunin & Kashaev

References

Zapiski Vserossiskogo Mineralogicheskogo Obshchetstva 126 (1997) (2), 110

IMA group assignments

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

'Sericite' (Var.v. Muscovite)		9.EC.15
Ganterite	(Ba,Na,K)(Al,Mg)₂[(OH,F)₂\|(Al,Si)Si₂O₁₀] monoklin : 2/m : C2/c	9.EC.15
Muscovite	KAl₂(Si₃Al)O₁₀(OH,F)₂ monoklin : 2/m : C2/c	9.EC.15
Tobelite	(NH₄,K)Al₂(Si₃Al)O₁₀(OH)₂ monoklin : 2/m : C2/m	9.EC.15
'Glauconite'	(K,Na)(Fe³⁺,Al,Mg)₂(Si,Al)₄O₁₀(OH)₂ monoklin : 2/m : C2/m	9.EC.15
Montdorite	KMn_0.5²⁺Fe_1.5²⁺Mg_0.5[F₂\|Si₄O₁₀] monoklin : 2/m : C2/m	9.EC.15
Nanpingite	CsAl₂(Si,Al)₄O₁₀(OH,F)₂ monoklin : 2/m : C2/c	9.EC.15
Paragonite	NaAl₂(Si₃Al)O₁₀(OH)₂ monoklin : 2/m : C2/c	9.EC.15
Celadonite	K(Mg,Fe²⁺)(Fe³⁺,Al)Si₄O₁₀(OH)₂ monoklin : 2 : C2	9.EC.15
Chernykhite	BaV₂(Si₂Al₂)O₁₀(OH)₂ monoklin : 2/m : C2/c	9.EC.15
Roscoelite	K(V,Al,Mg)₂AlSi₃O₁₀(OH)₂ monoklin : 2/m : C2/m	9.EC.15
Tainiolite	KLiMg₂Si₄O₁₀F₂ monoklin : 2/m : C/2m	9.EC.15
Voloshinite	Rb(LiAl_1.5☐_0.5)(Al_0.5Si_3.5)O₁₀F₂ monoklin : C2/c	9.EC.15
Cossaite	(Mg_0.5,◻)Al₆(SO₄)₆(HSO₄)F₆·36H₂O trigonal : 3 : R3	9.EC.15
'Muscovite-1M' (Pol.v. Muscovite)	KAl₂(Si₃Al)O₁₀(OH,F)₂ monoklin : 2/m : C2/m	9.EC.15
'Muscovite-2A' (Pol.v. Muscovite)	KAl₂(Si₃Al)O₁₀(OH,F)₂ triklin : 1 : C1	9.EC.15
'Boromuscovite'	KAl₂(Si₃B)O₁₀(OH,F)₂ monoklin : 2/m : C2/m	9.EC.15
Chromphyllite	K(Cr,Al)₂[(OH,F)₂\|AlSi₃O₁₀] monoklin : 2/m : C2/c	9.EC.15
'Muscovite-3T' (Pol.v. Muscovite)	KAl₂(Si₃Al)O₁₀(OH,F)₂ trigonal : 32 : P3₁12	9.EC.15
'Muscovite-2M2' (Pol.v. Muscovite)	KAl₂(Si₃Al)O₁₀(OH,F)₂ monoklin : 2/m	9.EC.15
Chromceladonite	KMgCr[(OH)₂\|Si₄O₁₀] monoklin : 2 : C2	9.EC.15
Ferroceladonite	K(Fe²⁺,Mg)(Fe³⁺,Al)[(OH)₂\|Si₄O₁₀] monoklin : 2/m : C2/m	9.EC.15
Aluminoceladonite	K(Mg,Fe²⁺)Al[(OH)₂\|Si₄O₁₀] monoklin	9.EC.15
Manganiceladonite	KMgMn³⁺Si₄O₁₀(OH)₂ monoklin : 2/m, 2 : C2, C2/m	9.EC.15
'Zweiaxiger glimmer'	KAl₂(Si,Al)₄O₁₀(OH)₂	9.EC.15
Ferroaluminoceladonite	K(Fe²⁺,Mg)(Al,Fe³⁺)[(OH)₂\|Si₄O₁₀] monoklin : 2/m : C2/m	9.EC.15

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

Aluminoceladonite	K(Mg,Fe²⁺)Al[(OH)₂\|Si₄O₁₀] monoklin	VIII/H.10-010
Ferroaluminoceladonite	K(Fe²⁺,Mg)(Al,Fe³⁺)[(OH)₂\|Si₄O₁₀] monoklin : 2/m : C2/m	VIII/H.10-020
Celadonite	K(Mg,Fe²⁺)(Fe³⁺,Al)Si₄O₁₀(OH)₂ monoklin : 2 : C2	VIII/H.10-030
Chromceladonite	KMgCr[(OH)₂\|Si₄O₁₀] monoklin : 2 : C2	VIII/H.10-035
Ferroceladonite	K(Fe²⁺,Mg)(Fe³⁺,Al)[(OH)₂\|Si₄O₁₀] monoklin : 2/m : C2/m	VIII/H.10-040
Paragonite	NaAl₂(Si₃Al)O₁₀(OH)₂ monoklin : 2/m : C2/c	VIII/H.10-050
'Boromuscovite'	KAl₂(Si₃B)O₁₀(OH,F)₂ monoklin : 2/m : C2/m	VIII/H.10-060
Muscovite	KAl₂(Si₃Al)O₁₀(OH,F)₂ monoklin : 2/m : C2/c	VIII/H.10-070
Chromphyllite	K(Cr,Al)₂[(OH,F)₂\|AlSi₃O₁₀] monoklin : 2/m : C2/c	VIII/H.10-080
Roscoelite	K(V,Al,Mg)₂AlSi₃O₁₀(OH)₂ monoklin : 2/m : C2/m	VIII/H.10-090
Ganterite	(Ba,Na,K)(Al,Mg)₂[(OH,F)₂\|(Al,Si)Si₂O₁₀] monoklin : 2/m : C2/c	VIII/H.10-095
Tobelite	(NH₄,K)Al₂(Si₃Al)O₁₀(OH)₂ monoklin : 2/m : C2/m	VIII/H.10-100
Nanpingite	CsAl₂(Si,Al)₄O₁₀(OH,F)₂ monoklin : 2/m : C2/c	VIII/H.10-110

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

Paragonite	NaAl₂(Si₃Al)O₁₀(OH)₂ monoklin : 2/m : C2/c	9.EC.200
Luanshiweiite-2M1	KLiAl_1.5(Si_3.5Al_0.5)O₁₀(OH)₂ monoklin : 2/m : C2/c	9.EC.205
Muscovite	KAl₂(Si₃Al)O₁₀(OH,F)₂ monoklin : 2/m : C2/c	9.EC.240
'Fuchsite' (Var.v. Muscovite)	K(Al,Cr)₃Si₃O₁₀(OH)₂	9.EC.241
Chromphyllite	K(Cr,Al)₂[(OH,F)₂\|AlSi₃O₁₀] monoklin : 2/m : C2/c	9.EC.242
'Boromuscovite'	KAl₂(Si₃B)O₁₀(OH,F)₂ monoklin : 2/m : C2/m	9.EC.245
Nanpingite	CsAl₂(Si,Al)₄O₁₀(OH,F)₂ monoklin : 2/m : C2/c	9.EC.250
Voloshinite	Rb(LiAl_1.5☐_0.5)(Al_0.5Si_3.5)O₁₀F₂ monoklin : C2/c	9.EC.255
Chernykhite	BaV₂(Si₂Al₂)O₁₀(OH)₂ monoklin : 2/m : C2/c	9.EC.260
Ganterite	(Ba,Na,K)(Al,Mg)₂[(OH,F)₂\|(Al,Si)Si₂O₁₀] monoklin : 2/m : C2/c	9.EC.270

Other languages

German	Chromphyllit
French	Chromphyllite
English	Chromphyllite
Spanish	Cromfilita
Russian	Хромфиллит

Alternative Name

Spanish

Chromphyllita

IMA Number

IMA 1995-052

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

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

Mineral Dealer

German pages

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Crystal-Treasure.com - search for: Chromphyllit
Bosse - search for: Chromphyllit

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