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Cahnite

Pictures (7 Images total)

Borcarit, Cahnit
Views (File:
1518422334
): 1069
Borcarit, Cahnit
Borcarit (grün) mit Cahnit (weißlich); Größe: 65x65x27 mm; Fundort: Huanggang Mines, Lagerstättenbezirk Huanggang-Sumugou, Hexigten-Banner (Keshiketeng), Präfektur Ulanhad Bund, Innere Mongolei, China
Copyright: Rob Lavinsky; Contribution: slugslayer
Location: China/Innere Mongolei (Neimenggu)/Ulanhad Bund (Chifeng, Präf)/Chifeng, Stadt/Hexigten-Banner (Keshiketeng)/Huanggang-Sumugou, LS-Bezirk/Huanggang Fe-Sn Lagerstätte
Mineral: Borcarite, Cahnite
Image: 1518422334
Rating: 5 (votes: 1)
License: Usage for Mineralienatlas project only
Borcarit, Cahnit

Borcarit (grün) mit Cahnit (weißlich); Größe: 65x65x27 mm; Fundort: Huanggang Mines, Lagerstättenbezirk Huanggang-Sumugou, Hexigten-Banner (Keshiketeng), Präfektur Ulanhad Bund, Innere Mongolei, Ch...
Copyright: Rob Lavinsky
Contribution: slugslayer 2018-02-12
Locality: Huanggang Fe-Sn Lagerstätte / Huanggang-Sumugou, LS-Bezirk / Hexigten-Banner (Keshiketeng) / Chifeng, Stadt / Ulanhad Bund (Chifeng, Präf) / Innere Mongolei (Neimenggu) / China
Cahnit mit Rhodonit
Views (File:
1277756452
): 1466
Cahnit mit Rhodonit
Größe: 26x23 mm; Fundort: Franklin, Franklin Mining District, Sussex Co., New Jersey, USA
Copyright: Rock Currier; Contribution: slugslayer
Location: USA/New Jersey/Sussex Co./Franklin Mining District/Franklin
Mineral: Cahnite
Image: 1277756452
License: Usage for Mineralienatlas project only
Cahnit mit Rhodonit

Größe: 26x23 mm; Fundort: Franklin, Franklin Mining District, Sussex Co., New Jersey, USA
Copyright: Rock Currier
Contribution: slugslayer 2010-06-28
Locality: Franklin / Franklin Mining District / Sussex Co. / New Jersey / USA
Cahnit
Views (File:
1353176448
): 1272
Cahnit
Oktaederförmige farblose Kristalle, BB = 1,5 mm, Fundort: Vallerano Steinbruch, Valleranello, Rom, Latium (Lazio), Region, Italien.
Copyright: Heribert Rotter; Contribution: Münchener Micromounter
Collection: Lithothek der Münchener Micromounter, Collection number: A006555, Donator: Klaus Fleck
Location: Italien/Latium (Lazio), Region/Rom/Valleranello/Vallerano Steinbruch
Mineral: Cahnite
Image: 1353176448
License: Usage for Mineralienatlas project only
Cahnit (SNr: A006555)

Oktaederförmige farblose Kristalle, BB = 1,5 mm, Fundort: Vallerano Steinbruch, Valleranello, Rom, Latium (Lazio), Region, Italien.
Collection: Lithothek der Münchener Micromounter
Copyright: Heribert Rotter
Contribution: Münchener Micromounter 2012-11-17
Locality: Vallerano Steinbruch / Valleranello / Rom / Latium (Lazio), Region / Italien
Borcarit, Cahnit
Views (File:
1518422219
): 879
Borcarit, Cahnit
Borcarit (grün) mit Cahnit (weißlich); Größe: 30x25x21 mm; Fundort: Huanggang Mines, Lagerstättenbezirk Huanggang-Sumugou, Hexigten-Banner (Keshiketeng), Präfektur Ulanhad Bund, Innere Mongolei, China
Copyright: Rob Lavinsky; Contribution: slugslayer
Location: China/Innere Mongolei (Neimenggu)/Ulanhad Bund (Chifeng, Präf)/Chifeng, Stadt/Hexigten-Banner (Keshiketeng)/Huanggang-Sumugou, LS-Bezirk/Huanggang Fe-Sn Lagerstätte
Mineral: Borcarite, Cahnite
Image: 1518422219
License: Usage for Mineralienatlas project only
Borcarit, Cahnit

Borcarit (grün) mit Cahnit (weißlich); Größe: 30x25x21 mm; Fundort: Huanggang Mines, Lagerstättenbezirk Huanggang-Sumugou, Hexigten-Banner (Keshiketeng), Präfektur Ulanhad Bund, Innere Mongolei, Ch...
Copyright: Rob Lavinsky
Contribution: slugslayer 2018-02-12
Locality: Huanggang Fe-Sn Lagerstätte / Huanggang-Sumugou, LS-Bezirk / Hexigten-Banner (Keshiketeng) / Chifeng, Stadt / Ulanhad Bund (Chifeng, Präf) / Innere Mongolei (Neimenggu) / China
Borcarit, Cahnit
Views (File:
1518422264
): 845
Borcarit, Cahnit
Borcarit (grün) mit Cahnit (weißlich); Größe: 46x34x19 mm; Fundort: Huanggang Mines, Lagerstättenbezirk Huanggang-Sumugou, Hexigten-Banner (Keshiketeng), Präfektur Ulanhad Bund, Innere Mongolei, China
Copyright: Rob Lavinsky; Contribution: slugslayer
Location: China/Innere Mongolei (Neimenggu)/Ulanhad Bund (Chifeng, Präf)/Chifeng, Stadt/Hexigten-Banner (Keshiketeng)/Huanggang-Sumugou, LS-Bezirk/Huanggang Fe-Sn Lagerstätte
Mineral: Borcarite, Cahnite
Image: 1518422264
License: Usage for Mineralienatlas project only
Borcarit, Cahnit

Borcarit (grün) mit Cahnit (weißlich); Größe: 46x34x19 mm; Fundort: Huanggang Mines, Lagerstättenbezirk Huanggang-Sumugou, Hexigten-Banner (Keshiketeng), Präfektur Ulanhad Bund, Innere Mongolei, Ch...
Copyright: Rob Lavinsky
Contribution: slugslayer 2018-02-12
Locality: Huanggang Fe-Sn Lagerstätte / Huanggang-Sumugou, LS-Bezirk / Hexigten-Banner (Keshiketeng) / Chifeng, Stadt / Ulanhad Bund (Chifeng, Präf) / Innere Mongolei (Neimenggu) / China
Borcarit, Cahnit
Views (File:
1518422370
): 303
Borcarit, Cahnit
Borcarit (grün) mit Cahnit (weißlich); Größe: 77x60x28 mm; Fundort: Huanggang Mines, Lagerstättenbezirk Huanggang-Sumugou, Hexigten-Banner (Keshiketeng), Präfektur Ulanhad Bund, Innere Mongolei, China
Copyright: Rob Lavinsky; Contribution: slugslayer
Location: China/Innere Mongolei (Neimenggu)/Ulanhad Bund (Chifeng, Präf)/Chifeng, Stadt/Hexigten-Banner (Keshiketeng)/Huanggang-Sumugou, LS-Bezirk/Huanggang Fe-Sn Lagerstätte
Mineral: Borcarite, Cahnite
Image: 1518422370
License: Usage for Mineralienatlas project only
Borcarit, Cahnit

Borcarit (grün) mit Cahnit (weißlich); Größe: 77x60x28 mm; Fundort: Huanggang Mines, Lagerstättenbezirk Huanggang-Sumugou, Hexigten-Banner (Keshiketeng), Präfektur Ulanhad Bund, Innere Mongolei, Ch...
Copyright: Rob Lavinsky
Contribution: slugslayer 2018-02-12
Locality: Huanggang Fe-Sn Lagerstätte / Huanggang-Sumugou, LS-Bezirk / Hexigten-Banner (Keshiketeng) / Chifeng, Stadt / Ulanhad Bund (Chifeng, Präf) / Innere Mongolei (Neimenggu) / China

You find additional specimen at the Geolitho Museum

Collectors Summary

Color farblos, weiß
Streak color weiß
Hardness (Mohs) 5
Solubility +++ Säuren
Crystal System tetragonal, I4

Chemism

Chemical formula

Ca2B(AsO4)(OH)4

Chemical composition

Arsen, Calcium, Bor, Sauerstoff, Wasserstoff

Unit weight: 297.91733 u; Number of atoms in the formula: 16

Info

Empirical formula:

Ca2B(AsO4)(OH)4

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

1.35

4

25.00

1.0079470

4.0317880
Boron

B

3.63

1

6.25

10.8117000

10.8117000
Oxygen

O

42.96

8

50.00

15.9994300

127.9954400
Calcium

Ca

26.91

2

12.50

40.0784000

80.1568000
Arsenic

As

25.15

1

6.25

74.9216020

74.9216020

Analysis wt%

CaO : 37.62, B2O3 : 11.86, As2O5 : 38.05, H2O : 12.42 (Ref: American Mineralogist 27)

Strunz 9th edition incl. updates

6.AC.70

6: Borate
A: Monoborate
C: B(O,OH)4, ohne und mit zusätzlichen [Anionen]; 1(T), 1(T)+OH, etc.
70:Cahnit-Gruppe

Lapis Classification

V/G.08-030

V: NITRATE, CARBONATE UND BORATE
G: Inselborate
8: [BO4] 5-- und [B(OH)4] 1--Tetraeder

Classification by Hölzel

6.AC.460

6: Borates
A: Monoborates
C:
4: Moydite-Cahnite-Group (with CO3, SO4, PO4, AsO4 - heterotypes)

Dana 8th edition

43.04.04.01

43: Compound Phosphates, etc.
04: Compound Phosphates, etc. (Anhydrous Compound Anions With Hydroxyl or Halogen)

IMA status

Erstbeschreibung vor CNMNC-Gründung (1959), als Mineral meist anerkannt

Mineral status

anerkanntes Mineral

Optical Properties

Color

farblos, weiß

Streak color

weiß

Diaphaneity (Transparency)

transparent

max. Birefringence

0.001
Birefringence chart\! Cahnite title=Birefringence chart Cahnite

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

1.662

RI value γ / ε

1.663

Ri mean

1.662

2V angle

Uniaxial (+)

Optical Data Luminescence

Color LW-UV (365nm)

  

gelblich weiß

LW-UV Intensity

schwach

Color SW-UV (254nm)

  

gelblich weiß

SW-UV Intensity

schwach

Afterglow (Persistant Luminescence)

keine Daten

Crystallography

Crystal System

tetragonal

Class (H-M)

4

Space Group number

82

Space Group

I4

Cell parameters a (Å)

7.095

Cell parameters b (Å)

-

Cell parameters c (Å)

6.190

Cell parameters a/b or c/a

0.872

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

2

Volumne (ų)

311.599

X-Ray Powder Diffraction

5.02(20),
4.67(20),
3.56(100),
2.833(20),
2.640(50),
2.514(10),
2.336(20),
1.818(50)
XRD chart Cahnite

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)

5

VHN (Hardness Vickers)

413 (10g)

Density (g/cm³)

3.16

3.175 ( ρ calc. Mineralienatlas )

Instability

+++ Säuren

(Co-)Type locality

(Co-)Type locality

USA/New Jersey/Sussex Co./Franklin Mining District/Franklin/Franklin Marble/Furnace Quarry

Preface

Author (Name, Year)

Palache, 1921

References

Handbook of Mineralogy (Anthony et al.), 4 (2000), 89

Other languages

German

Cahnit

Spanish

Cahnita

English

Cahnite

French

Cahnite

Russian

Канит

Simplified Chinese

砷硼钙石

Alternative Name

Calcium Edingtonite

Japanese

カーン石

Simplified Chinese

水砷硼钙石

CNMNC symbol

Symbol

Cah

Locations with GPS information

IDs

GUSID (Global unique identifier short form) ybo0uM5u1kaND0N0VXs7xw
GUID (Global unique identifier) B834BAC9-6ECE-46D6-8D0F-4374557B3BC7
Database ID 554