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Mcnearite

Pictures (2 Images total)

Mcnearit
Views (Image: 1624645575): 119
Mcnearit

Gruppen von weißen/farblosen Mcnearit, Hilarion Mine, Kamariza, Laurion, Attika, Griechenland; BB < 1 mm, analysiert

Copyright: MinTreasure.com (Carsten Slotta)
Contribution: openpit 2021-06-25
Locality: Hilarion Mine (Hilarion-Stollen, Mine Nr. 50) / Kamariza / Lavrion (Laurion), Bergbaudistrikt / Attika (Attikí, Attica) / Griechenland
Mcnearit xx
Views (Image: 1635193896): 119
Mcnearit xx

Bildbreite 2,6 mm, Aufnahmen 43 mit der Stacking-Methode

Collection: Karlheinz Grosch
Copyright: Karlheinz Grosch
Contribution: Karlheinz Grosch 2021-10-25
Locality: Hilarion Mine (Hilarion-Stollen, Mine Nr. 50) / Kamariza / Lavrion (Laurion), Bergbaudistrikt / Attika (Attikí, Attica) / Griechenland

Collectors Summary

Color weiß
Streak color weiß
Solubility +++ Säuren
Crystal System triklin, P1, P1

Chemism

Chem­ical formula

NaCa5H4(AsO4)5·4H2O

Chem­ical com­po­si­tion

Arsen, Calcium, Natrium, Sauerstoff, Wasserstoff

Unit weight: 994.0714642 u; Number of atoms in the formula: 47

Info

Empirical formula:

NaCa5H4(AsO4)5·4H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

1.22

12

25.53

1.0079470

12.0953640

Oxygen

O

38.63

24

51.06

15.9994300

383.9863200

Sodium

Na

2.31

1

2.13

22.9897702

22.9897702

Calcium

Ca

20.16

5

10.64

40.0784000

200.3920000

Arsenic

As

37.68

5

10.64

74.9216020

374.6080100

Anal­y­sis wt%

As2O5 : 60.59, CaO : 25.27, Na2O : 3.40, H2O : 11.32 (Ref: Schweizerische Mineralogische und Petrographische

Mitteilungen 81)

Strunz 9th edi­tion incl. updates

8.CJ.55

8: Phosphate, Arsenate, Vanadate
C: Phosphate ohne weitere Anionen, mit H2O
J: Ausschließlich mit großen Kationen
55:Mcnearit-Gruppe

Lapis Clas­sifica­tion

VII/C.24-020

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

Clas­sifica­tion by Hölzel

8.CF.300

8: PHOSPHATES ARSENATES VANADATES
C: Phosphates (-Anions +Water)
F: Phosphates, C large, V: 1 to 4
3: Valency: 1+2, V1/V2=1/1 Brushite-Group

Dana 8th edi­tion

39.03.07.01

39: Hydrated Acid Phosphates, etc
03: Hydrated Acid Phosphates, etc with miscellaneous formulae

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

weiß

Streak color

weiß

max. Birefrin­gence

0.013

Birefringence chart\! Mcnearite title=Birefringence chart Mcnearite

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

1.559

RI value β

1.562

RI value γ / ε

1.572

Ri mean

1.564

2V angle

Biaxial (+) 60°

Optical Data Luminescence

Color LW-UV (365nm)

 

violett

Color SW-UV (254nm)

 

violett

After­glow (Per­sistant Lumi­nes­cence)

keine Daten

Crystallography

Crystal Sys­tem

triklin

Class (H-M)

1, 1

Space Group number

1, 2

Space Group

P1, P1

Cell param­e­ters a (Å)

13.50

Cell param­e­ters b (Å)

14.10

Cell param­e­ters c (Å)

6.95

Cell param­e­ters a/b or c/a

0.957

Cell param­e­ters c/b

0.493

Cell param­e­ters α

90°..

Cell param­e­ters β

92°..

Cell param­e­ters γ

119°..

Z

2

Volumne (ų)

1156.141

X-Ray Pow­der Diffrac­tion

12.33(100),
6.94(50),
4.40(30),
3.92(60),
3.400(20),
3.122(60),
2.939(20),
2.748(40)

XRD chart Mcnearite

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

Physical Properties

Density (g/cm³)

2.6

2.855 ( ρ calc. Mineralienatlas )

Insta­bil­ity

+++ Säuren

Preface

Author (Name, Year)

Sarp & Deferne & Liebich, 1981

References

Schweizerische Mineralogische und Petrographische Mitteilungen 61 (1981), 1

Other languages

German

Mcnearit

Spanish

Mcnearita

French

Mcnearite

English

Mcnearite

CNMNC (IMA)-Number

IMA 1980-017

CNMNC symbol

Symbol

Mnr

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

German pages

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

English pages

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

Mineral Dealer

German pages

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

Locations with GPS information