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Biphosphammite

Pictures (1 Images total)

Biphosphammit
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Biphosphammit
Größe: 39x22x21 mm; Fundort: Murraelelevyn Cave, Cocklebiddy, Roadhouse, Dundas Shire, Western Australia, Australien
Copyright: Walter Kellogg; Contribution: Philip Blümner
Location: Australien/Western Australia/Nullarbor Plain/Eucla/Murra-el-elevyn Cave
Mineral: Biphosphammite
Image: 1514698068
License: Usage for Mineralienatlas project only
Biphosphammit

Größe: 39x22x21 mm; Fundort: Murraelelevyn Cave, Cocklebiddy, Roadhouse, Dundas Shire, Western Australia, Australien
Copyright: Walter Kellogg
Contribution: Philip Blümner 2017-12-31
Locality: Murra-el-elevyn Cave / Eucla / Nullarbor Plain / Western Australia / Australien

You find additional specimen at the Geolitho Museum

Collectors Summary

Color braun, farblos, grauweiß
Streak color weiß
Hardness (Mohs) 1.5
Solubility +++ H2O
Crystal System tetragonal, I42d

Chemism

Chemical formula

(NH4)H2(PO4)

Chemical composition

Phosphor, Sauerstoff, Stickstoff, Wasserstoff

Unit weight: 115.0258832 u; Number of atoms in the formula: 12

Info

Empirical formula:

(NH4)H2(PO4)

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

5.26

6

50.00

1.0079470

6.0476820
Nitrogen

N

12.18

1

8.33

14.0067200

14.0067200
Oxygen

O

55.64

4

33.33

15.9994300

63.9977200
Phosphorus

P

26.93

1

8.33

30.9737612

30.9737612

Strunz 9th edition incl. updates

8.AD.15

8: Phosphate, Arsenate, Vanadate
A: Phosphate, etc., ohne weitere Anionen, ohne H2O
D: Mit ausschließlich großen [Kationen]
15:Biphosphammit-Gruppe

Lapis Classification

VII/A.12-040

VII: PHOSPHATE, ARSENATE UND VANADATE ("Phosphate" des Registers immer einschließlich isotyper Arsenate und Vanadate!)
A: Wasserfreie Phosphate [PO4] 3-, ohne fremde Anionen
12: Sehr große Kationen: Ca-Na-K, SE, Bi u.a.

Classification by Hölzel

8.AD.210

8: PHOSPHATES ARSENATES VANADATES
A: Phosphates (-anions -water)
D: Phosphates, C large

Dana 8th edition

37.01.04.01

37: Phosphate Minerals
01: Anhydrous Acid Phosphates, etc with miscellaneous formulae

IMA status

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

Mineral status

anerkanntes Mineral

Optical Properties

Color

braun, farblos, grauweiß

Streak color

weiß

Diaphaneity (Transparency)

transparent bis durchscheinend

max. Birefringence

0.045
Birefringence chart\! Biphosphammite title=Birefringence chart Biphosphammite

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

1.525

RI value γ / ε

1.480

Ri mean

1.510

2V angle

Uniaxial (-)

Optical Data Luminescence

Color LW-UV (365nm)

  

weiß

LW-UV Intensity

schwach

Color SW-UV (254nm)

  

weiß

SW-UV Intensity

schwach

Afterglow (Persistant Luminescence)

keine Daten

Crystallography

Crystal System

tetragonal

Class (H-M)

42m

Space Group number

122

Space Group

I42d

Cell parameters a (Å)

7.502

Cell parameters b (Å)

-

Cell parameters c (Å)

7.554

Cell parameters a/b or c/a

1.007

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

4

Volume (ų)

425.139

X-Ray Powder Diffraction

5.24(9),
3.75(10),
3.02(9),
2.650(7),
2.368(7),
2.002(5),
1.993(8),
1.593 (6)

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

1.5

VHN (Hardness Vickers)

18 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.04

1.797 ( ρ calc. Mineralienatlas )

Instability

+++ H2O

(Co-)Type locality

(Co-)Type locality

Australien/Western Australia/Nullarbor Plain/Eucla/Murra-el-elevyn Cave

Preface

Author (Name, Year)

Shepard, 1870

References

Mineralogical Magazine 38 (1972), 965

CNMNC Newsletter No. 50; Mineralogical Magazine, 31 [Formel]

Other languages

Spanish

Bifosfamita

German

Biphosphammit

French

Biphosphammite

English

Biphosphammite

Russian

Бифосфаммит

Alternative Name

Spanish

Biphosphammita

CNMNC symbol

Symbol

Bpam

Locations with GPS information

IDs

GUSID (Global unique identifier short form) a-po2OCC2km4obdomCsIeQ
GUID (Global unique identifier) D868EA6B-82E0-49DA-B8A1-B768982B0879
Database ID 402