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Nacaphite (Nacaphit)

Collectors Summary

Color farblos, weiß
Streak color weiß
Lustre Glasglanz
Hardness (Mohs) 3
Solubility +++ Säuren, - H2O
Crystal System triklin, P1

Additional information / Summary

Nacaphit wurde auch als othorhombisch beschrieben.

Chemism

Chemical formula

Na2Ca(PO4)F

Chemical composition

Calcium, Natrium, Fluor, Phosphor, Sauerstoff

Unit weight: 200.02782485 u; Number of atoms in the formula: 9

Info

Empirical formula:

Na2Ca(PO4)F

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

31.99

4

44.44

15.9994300

63.9977200

Fluorine

F

9.50

1

11.11

18.9984033

18.9984033

Sodium

Na

22.99

2

22.22

22.9897702

45.9795404

Phosphorus

P

15.48

1

11.11

30.9737612

30.9737612

Calcium

Ca

20.04

1

11.11

40.0784000

40.0784000

Analysis wt%

P2O5 : 36.00, CaO : 26.66, SrO : 0.55, Na2O : 31.44, F : 9.32 (Ref: Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva, 1904-1974 1980)

Strunz 9th edition incl. updates

8.BO.05

8: Phosphate, Arsenate, Vanadate
B: Phosphate, etc., mit weitere Anionen, ohne H2O
O: Mit ausschließlich [Kationen] (OH, etc.):RO4 ≥ 1:1
05:Nacaphit-Gruppe

Lapis Classification

VII/B.25-060

VII: PHOSPHATE, ARSENATE UND VANADATE ("Phosphate" des Registers immer einschließlich isotyper Arsenate und Vanadate!)
B: Wasserfreie Phosphate, mit fremden Anionen F,Cl,O,OH
25: Mittelgroße und große Kationen: Mg-Cu-Zn und Ca-Na-K-Ba-Pb

Classification by Hölzel

8.BP.100

8: PHOSPHATES ARSENATES VANADATES
B: Phosphates (+Anions -Water)
P: Other Phosphates with large Cations
1: very large: 1+2 Nacaphite-Group

Dana 8th edition

41.03.06.01

41: Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen
03: Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen where (A B)3 (XO4) Zq

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

farblos, weiß

Streak color

weiß

Diaphaneity (Transparency)

transparent

Lustre

Glasglanz

max. Birefringence

0.012

Birefringence chart\! Nacaphite title=Birefringence chart Nacaphite

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

1.508

RI value β

1.515

RI value γ / ε

1.520

Ri mean

1.514

2V angle

Biaxial (-) 80°

Optical Data Luminescence

Color SW-UV (254nm)

gelb

Most Common Activator

Mn2+

Afterglow (Persistant Luminescence)

keine Daten

Crystallography

Crystal System

triklin

Class (H-M)

1

Space Group number

2

Space Group

P1

Cell parameters a (Å)

13.319

Cell parameters b (Å)

7.096

Cell parameters c (Å)

10.649

Cell parameters a/b or c/a

1.877

Cell parameters c/b

1.501

Cell parameters α

90°

Cell parameters β

113.53

Cell parameters γ

90°

Z

8

Volumne (ų)

922.769

X-Ray Powder Diffraction

4.00(20),
3.51(20),
3.054(40),
3.049(40),
2.649(100),
2.005(40),
1.762(30),
1.470(20)

XRD chart Nacaphite

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)

3

VHN (Hardness Vickers)

83 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.85

2.879 ( ρ calc. Mineralienatlas )

Instability

+++ Säuren, - H2O

Preface

Author (Name, Year)

Khomyakov & Kazakova & Pushcharovskiy, 1980

References

Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva 109 (1980), 50

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

Nacaphite

Na2Ca(PO4)F

triklin : 1 : P1

8.BO.05

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

Isokite

CaMg(PO4)F

monoklin : 2/m : A2/a

VII/B.25-010

'Panasqueiraite'

Ca(Mg,Fe2+)[(OH,F)|PO4]

VII/B.25-020

Tilasite

CaMg(AsO4)F

monoklin : 2/m : C2/c

VII/B.25-030

Lacroixite

NaAl(PO4)F

monoklin : 2/m : C2/c

VII/B.25-040

Durangite

NaAl(AsO4)F

monoklin : 2/m : C2/c

VII/B.25-050

Maxwellite

(Na,Ca)(Fe3+,Al,Mg)(AsO4)(F,O)

monoklin : 2/m : C2/c

VII/B.25-055

Nacaphite

Na2Ca(PO4)F

triklin : 1 : P1

VII/B.25-060

Thadeuite

(Ca,Mn2+)(Mg,Fe2+,Mn3+)3(PO4)2(OH,F)2

orthorhombisch : 222 : C2221

VII/B.25-080

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

Nacaphite

Na2Ca(PO4)F

triklin : 1 : P1

8.BP.100

Arctite

Na5Ca7Ba(PO4)6F3

trigonal : 3m : R3m

8.BP.120

Nefedovite

Na5Ca4(PO4)4F

tetragonal : 4 : I4

8.BP.150

Kuznetsovite

Hg3Cl(AsO4)

kubisch : 23 : P213

8.BP.180

Related minerals "Dana 8. Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Clinoclase

Cu3(AsO4)(OH)3

monoklin : 2/m : P21/c

41.03.01.01

Gilmarite

Cu3[(OH)3|AsO4]

triklin : 1 : P1

41.03.01.02

Cornetite

Cu3(PO4)(OH)3

orthorhombisch : mmm : Pbca

41.03.02.01

Theoparacelsite

Cu3(OH)2As2O7

orthorhombisch : mmm : Pmma

41.03.02.02

Flinkite

Mn2+2Mn3+(AsO4)(OH)4

orthorhombisch : mmm : Pnma

41.03.03.01

Retzian-(Ce)

Mn2Ce(AsO4)(OH)4

orthorhombisch : mmm : Pban

41.03.04.01

Retzian-(La)

(Mn,Mg)2(La,Ce,Nd)(AsO4)(OH)4

orthorhombisch : mmm : Pban

41.03.04.03

Viitaniemiite

Na(Ca,Mn2+)Al(PO4)(F,OH)3

monoklin : 2/m : P21/m

41.03.05.01

Nacaphite

Na2Ca(PO4)F

triklin : 1 : P1

41.03.06.01

Gerdtremmelite

(Zn,Fe2+)(Al,Fe3+)2(AsO4)(OH)5

41.03.07.01

Paulkellerite

Bi2Fe3+(PO4)O2(OH)2

monoklin : 2/m : C2/c

41.03.08.01

Brendelite

(Bi3+,Pb2+)2(Fe3+,Fe2+)[O2|OH|PO4]

monoklin : 2/m : C2/m

41.03.08.02

Other languages

Spanish

Nacafita

German

Nacaphit

English

Nacaphite

French

Nacaphite

Russian

Накафит

Alternative Name

Spanish

Nacaphita

IMA Number

IMA 1979-026

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

German pages

DeWikiPedia - search for: Nacaphit
Google-Bilder-Suche - search for: Nacaphit
Mineralogisch-Petrographisches-Institut Hamburg - search for: Nacaphit

English pages

Mindat - search for: Nacaphite
Webmineral - search for:Nacaphite
Handbook-of-Mineralogy - search for: Nacaphite
RRUFF - Raman, XRD and other mineral data - search for: Nacaphite
RRUFF - References and PDF downloads - search for: Nacaphite
American-Mineralogist-Crystal-Structure-Database - search for: Nacaphite
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Russian pages

Webmineral.ru - search for: Накафит

Mineral Dealer

German pages

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Locations with GPS information




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