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Triploidite (Triploidit)

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Triploidit
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Triploidit
Fo.: Silbergrube Waidhaus, Oberpfalz, Bayern, Deutschland, kugelige, braune XX, BB 1,0mm
Copyright: Hannes Osterhammer; Contribution: Münchener Micromounter
Collection: Lithothek der Münchener Micromounter, Collection number: A002228, Donator: Manfred Früchtl
Location: Deutschland/Bayern/Oberpfalz, Bezirk/Neustadt an der Waldnaab, Landkreis/Waidhaus/Silbergrube
Mineral: Triploidite
Image: 1243500731
Rating: 7.5 (votes: 2)
License: Usage for Mineralienatlas project only
Triploidit (SNr: A002228)

Fo.: Silbergrube Waidhaus, Oberpfalz, Bayern, Deutschland, kugelige, braune XX, BB 1,0mm

Collection: Lithothek der Münchener Micromounter
Copyright: Hannes Osterhammer
Contribution: Münchener Micromounter 2009-05-28
Locality: Silbergrube / Waidhaus / Neustadt an der Waldnaab, Landkreis / Oberpfalz, Bezirk / Bayern / Deutschland

You find additional specimen at the Geolitho Museum

Collectors Summary

Color gelbbraun, rötlichbraun
Streak color weiß
Hardness (Mohs) 4.50 - 5.00
Solubility +++ Säuren
Crystal System monoklin, P21/a

Chemism

Chemical formula

(Mn,Fe2+)2(PO4)(OH)

Chemical composition

Eisen, Mangan, Phosphor, Sauerstoff, Wasserstoff

Unit weight: 222.30853305 u; Number of atoms in the formula: 9

Info

Empirical formula:

(Mn0.75Fe0.25)2(PO4)(OH)

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.45

1

11.11

1.0079470

1.0079470

Oxygen

O

35.98

5

55.56

15.9994300

79.9971500

Phosphorus

P

13.93

1

11.11

30.9737612

30.9737612

Manganese

Mn

37.07

1.5

16.67

54.9380499

82.4070749

Iron

Fe

12.56

0.5

5.56

55.8452000

27.9226000

Strunz 9th edition incl. updates

8.BB.15

8: Phosphate, Arsenate, Vanadate
B: Phosphate, etc., mit weitere Anionen, ohne H2O
B: Mit ausschließlich mittelgroßen [Kationen], (OH, etc.): RO4 ≤ 1:1
15:Wagnerit-Gruppe

Lapis Classification

VII/B.03-060

VII: PHOSPHATE, ARSENATE UND VANADATE ("Phosphate" des Registers immer einschließlich isotyper Arsenate und Vanadate!)
B: Wasserfreie Phosphate, mit fremden Anionen F,Cl,O,OH
3: Mittelgroße Kationen: Mg-Mn-Fe-Cu-Zn

Classification by Hölzel

8.BB.260

8: PHOSPHATES ARSENATES VANADATES
B: Phosphates (+Anions -Water)
B: Phosphates, C medium, V: 2, OH/XO4=1/1
2: Monoclinic Zwieselite-Group

Dana 8th edition

41.06.03.02

41: Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen
06: Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen where (A)2 (XO4) Zq
03: Wolfeite Group

IMA status

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

Mineral status

anerkanntes Mineral

Optical Properties

Color

gelbbraun, rötlichbraun

Streak color

weiß

max. Birefringence

0.005

Birefringence chart\! Triploidite title=Birefringence chart Triploidite

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

1.725

RI value β

1.726

RI value γ / ε

1.730

Ri mean

1.727

2V angle

Biaxial (+) 45°

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

14

Space Group

P21/a

Cell parameters a (Å)

12.26

Cell parameters b (Å)

13.38

Cell parameters c (Å)

9.90

Cell parameters a/b or c/a

0.916

Cell parameters c/b

0.740

Cell parameters α

90°

Cell parameters β

108.7

Cell parameters γ

90°

Z

16

Volume (ų)

1538.254

X-Ray Powder Diffraction

3.41(50),
3.19(80),
3.10(90),
2.94(100),
2.58(50),
2.31(50),
2.15(50),
1.80(60)

XRD chart Triploidite

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)

4.50 - 5.00

VHN (Hardness Vickers)

340 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.697 (gemessen)

3.839 ( ρ calc. Mineralienatlas )

Instability

+++ Säuren

Preface

Author (Name, Year)

Brush & Dana, 1878

References

Handbook of Mineralogy (Anthony et al.), 4 (2000), 598

Other languages

German

Triploidit

Spanish

Triploidita

English

Triploidite

French

Triploidite

Russian

Триплоидит

Alternative Name

Simplified Chinese

羟磷锰矿

Simplified Chinese

羟磷锰铁矿

CNMNC symbol

Symbol

Tpd

Locations with GPS information

IDs

GUSID (Global unique identifier short form) lftBn-pwJkOpc4L3Eo7ldw
GUID (Global unique identifier) 9F41FB95-70EA-4326-A973-82F7128EE577
Database ID 3907