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Minehillite (Minehillit)

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Minehillit
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Minehillit
weiße Massen von Minehillit, Franklin Mine, Franklin, Sussex County, New Jersey, USA; BB ~ 3 mm
Copyright: Joy Desor; Contribution: openpit
Location: USA/New Jersey/Sussex Co./Franklin Mining District/Franklin/Franklin Mine
Mineral: Minehillite
Image: 1592129016
License: Usage for Mineralienatlas project only
Minehillit

weiße Massen von Minehillit, Franklin Mine, Franklin, Sussex County, New Jersey, USA; BB 3 mm
Copyright: Joy Desor
Contribution: openpit 2020-06-14
Locality: Franklin Mine / Franklin / Franklin Mining District / Sussex Co. / New Jersey / USA

Collectors Summary

Color farblos, grauweiß, grauschwarz, weiß
Streak color weiß
Hardness (Mohs) 4
Crystal System trigonal, P3c1

Chemism

Chemical formula

(K,Na)2-3Ca28(Zn4Al4Si40)O112(OH)16

Chemical composition

Aluminium, Calcium, Natrium, Silicium, Zink, Kalium, Sauerstoff, Wasserstoff

Unit weight: 4766.912282425 u; Number of atoms in the formula: 222.5

Info

Empirical formula:

(K0.75Na0.25)2.5Ca28(Zn4Al4Si40)O112(OH)16

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

0.34

16

7.19

1.0079470

16.1271520
Oxygen

O

42.96

128

57.53

15.9994300

2,047.9270400
Sodium

Na

0.30

0.63

0.28

22.9897702

14.3686064
Aluminium

Al

2.26

4

1.80

26.9815382

107.9261528
Silicon

Si

23.57

40

17.98

28.0855300

1,123.4212000
Potassium

K

1.54

1.88

0.84

39.0983100

73.3093313
Calcium

Ca

23.54

28

12.58

40.0784000

1,122.1952000
Zinc

Zn

5.49

4

1.80

65.4094000

261.6376000

Analysis wt%

SiO2 : 49.80, Al2O3 : 4.60, ZnO : 8.10, CaO : 32.00, K2O : 1.90, H2O : 2.84 (Ref: American Mineralogist 84)

Strunz 9th edition incl. updates

9.EE.35

9: Silikate (Germanate)
E: Schichtsilikate (Phyllosilikate)
E: Einfache tetrahedrale Netze aus sechsfach-Ringen, verbunden über octahedrale Netze oder Bänder
35:Reyerit-Gruppe

Lapis Classification

VIII/H.34-010

VIII: SILIKATE
H: Schichtsilikate
34: Schichtsilikate mit anderen Einfachschichten [Si6O15] 6- u.a.

Classification by Hölzel

9.ER.160

9: SILICATES
E: Phyllosilicates
R: Ca-Phyllosilicates

Dana 8th edition

73.02.02b.01

73: Phyllosilicates Phyllosilicate Condensed Tetrahedral Sheets
02: Phyllosilicates Phyllosilicate Condensed Tetrahedral Sheets with double and single layers
02b: Reyerite group (Minehillite Subgroup)

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Reyerite group

Optical Properties

Color

farblos, grauweiß, grauschwarz, weiß

Streak color

weiß

Diaphaneity (Transparency)

transparent

max. Birefringence

0.003
Birefringence chart\! Minehillite title=Birefringence chart Minehillite

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

1.607

RI value γ / ε

1.604

Ri mean

1.606

2V angle

Uniaxial (-)

Optical Data Luminescence

Luminescence

fluoreszierend, Kurzwelliges UV=matt violett, Langwelliges UV=matt violett

Color LW-UV (365nm)

  

blau

MW-UV (320nm)

  

blau

MW-UV Intensity

schwach

Color SW-UV (254nm)

  

blau

SW-UV Intensity

schwach

LW-UV Other Colors

  

bläulich weiß

MW-UV Other Colors

  

bläulich weiß

SW-UV Other Colors

  

bläulich weiß

Afterglow (Persistant Luminescence)

keine Daten

Crystallography

Crystal System

trigonal

Class (H-M)

3m

Space Group number

165

Space Group

P3c1

Cell parameters a (Å)

9.777

Cell parameters b (Å)

-

Cell parameters c (Å)

33.293

Cell parameters a/b or c/a

3.405

Cell parameters c/b

-

Z

1

Volumne (ų)

2756.099

X-Ray Powder Diffraction

16.1(70),
3.35(90),
3.14(60),
3.07(70),
2.965(50),
2.877(40),
2.764(100),
1.847(90)
XRD chart Minehillite

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)

4

VHN (Hardness Vickers)

190 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.93

2.872 ( ρ calc. Mineralienatlas )

Radioactivity

nicht nachweisbar

(Co-)Type locality

(Co-)Type locality

USA/New Jersey/Sussex Co./Franklin Mining District/Franklin/Franklin Mine

Preface

Author (Name, Year)

Dunn & Peacor & Leavens & Wicks, 1984

References

American Mineralogist 69 (1984), 1150

IMA group assignments

 
Reyerite group
 
 
 

 
 
Kodamaite
Na3(Ca5Na)Si16O36(OH)4F2·(14-x)H2O (x ≈ 5)
triklin
P1

 
 
Minehillite
(K,Na)2-3Ca28(Zn4Al4Si40)O112(OH)16
trigonal
P3c1

 
 
Reyerite
(Na,K)4Ca14Si22Al2O58(OH)8·6H2O
trigonal
P3

 
 
Truscottite
(Ca,Mn)14Si24O58(OH)8·2H2O
trigonal
P3

Refresh list

Actuality: 24. Mar 2023 - 14:01:43

Other languages

German

Minehillit

Spanish

Minehillita

French

Minehillite

English

Minehillite

Russian

Майнхиллит

Japanese

ﾐﾈﾋﾙﾗｲﾄ

CNMNC (IMA)-Number

IMA 1983-001

CNMNC symbol

Symbol

Mhl