Cianciulliite Mineral Data

General Cianciulliite Information

Chemical Formula:

Mn++++(Mg,Mn++)2Zn2(OH)10•2-4(H2O)

Composition:

Molecular Weight = 473.76 gm

Magnesium 7.70 % Mg 12.76 % MgO

Manganese 17.39 % Mn 7.49 % MnO / 18.35 % MnO₂

Zinc 27.60 % Zn 34.36 % ZnO

Hydrogen 3.40 % H 30.42 % H₂O

Oxygen 43.90 % O

______ ______

100.00 % 103.38 % = TOTAL OXIDE

Empirical Formula:

Mn⁴⁺Mg_1.5Mn²⁺_0.5Zn₂(OH)₁₀•3(H₂O)

Environment:

Secondary mineral from veins in a metamorphosed stratiform zinc orebody.

IMA Status:

Approved IMA 1991

Locality:

Franklin, Sussex County, New Jersey. Link to MinDat.org Location Data.

Name Origin:

Named for John Cianciulli, of Sussex, New Jersey, USA.

Synonym:

ICSD 80795

IMA1990-042

PDF 44-1407

Cianciulliite Image

Images:

Cianciulliite

Comments: SEM image of a typical cianciulliite crystals. The abundant incipient cleavage is very obvious. (AmMin, v76:1708).
Location: Franklin, New Jersey, USA. Scale: Field of view is 0.3 mm.
© American Mineralogist

Cianciulliite Crystallography

Axial Ratios:

a:b:c =2.4289:1:0.8754

Cell Dimensions:

a = 15.47, b = 6.369, c = 5.576, Z = 2; beta = 101.23° V = 538.88 Den(Calc)= 2.92

Crystal System:

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

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

By Intensity(I/I_o): 7.61(1), 2.745(0.6), 3.96(0.5),

Physical Properties of Cianciulliite

Cleavage:

{100} Perfect

Color:

Dark brown, Dark reddish brown, Reddish brown.

Density:

2.87

Diaphaneity:

Subtranslucent to Opaque

Fracture:

Flexible - Flexible fragments.

Habit:

Lath - Shaped like a small, thin plaster lath, tabular (rectangular) in shape.

Habit:

Tabular - Form dimensions are thin in one direction.

Hardness:

2 - Gypsum

Luster:

Pearly

Streak:

red brown

Optical Properties of Cianciulliite

Gladstone-Dale:

CI meas= -0.083 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.064 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2877,KPDmeas= 0.2927,KC= 0.2703
Ncalc = 1.78 - 1.79

Optical Data:

Biaxial (?), a=1.76, g=1.92, bire=0.1600

Pleochroism (x):

opaque.

Pleochroism (y):

dark brown.

Pleochroism (z):

opague.

RL Anisotrophism:

Very weak.

RL Bireflectance:

Very weak.

RL Color:

Gray.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Cianciulliite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
400 nm	9.52	9.72
420 nm	9.13	9.30
440 nm	8.85	8.97
460 nm	8.65	8.74
480 nm	8.44	8.56
500 nm	8.34	8.44
520 nm	8.23	8.35
540 nm	8.09	8.25
560 nm	8.06	8.21
580 nm	8.01	8.20
600 nm	7.98	8.18
620 nm	7.96	8.18
640 nm	7.98	8.18
660 nm	7.98	8.18
680 nm	7.93	8.15
700 nm	7.90	8.14

**Calculated Relative Intensity Colors of Cianciulliite in Air**
Relative Intensity	0%	100%	200%	300%	400%	500%	600%	700%	800%	900%	1000%
R₁
R₂

Calculated Properties of Cianciulliite

Electron Density:

Bulk Density (Electron Density)=2.90 gm/cc
note: Specific Gravity of Cianciulliite =2.92 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_{Cianciulliite}= 17.87 barns/electron
U=PE_{Cianciulliite} x rElectron Density= 51.88 barns/cc.

Radioactivity:

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

Cianciulliite Classification

Dana Class:

06.02.13.01 (06)Hydroxides and Oxides Containing Hydroxyl

(06.02)where X++ (OH)2

(06.02.13)Dana Group

06.02.13.01 Cianciulliite Mn(Mg,Mn)2Zn2(OH)10•2-4(H2O) C 2/m 2/m

Strunz Class:

04.FL.55 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate

04.F - Hydroxides (without V or U)

04.FL -Hydroxides with H2O ï¿½ (OH); sheets of edge-sharing octahedra

04.FL.55 Cianciulliite Mn(Mg,Mn)2Zn2(OH)10•2-4(H2O) C 2/m 2/m

Other Cianciulliite Information

References:

NAME( AntBidBlaNic3) PHYS. PROP.(Am.Min.,Vol.76,p1708-1710) OPTIC PROP.(AntBidBlaNic3)

See Also:

Links to other databases for Cianciulliite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Franklin Minerals(Dunn)
6 - GeoScienceWorld
7 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (MinSocAm)
10 - Handbook of Mineralogy (UofA)
11 - MinDAT
12 - Mineralienatlas (Deutsch)
13 - Online Mineral Museum
14 - QUT Mineral Atlas
15 - Ruff.Info
16 - WWW-MINCRYST

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Cianciulliite

Mn++++(Mg,Mn++)2Zn2(OH)10•2-4(H2O)
Dana No: 06.02.13.01 Strunz No: 04.FL.55
Locality:

Notes:

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