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Studenitsite (Studenitsit)

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Studenitsit
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Studenitsit
weiß/farbloses Aggregat von Studenitsit, Pobrdzhsky Potok & Peskanya, Baljevac na Ibru, Jarandol Basin, Raška, Zentral Serbien, Serbien; BB ~ 2 mm, analysiert
Copyright: MinTreasure.com (Carsten Slotta); Contribution: openpit
Location: Serbien/Jarandol Basin/Balevats/Pobrdzhsky Potok & Peskanya
Mineral: Studenitsite
Image: 1590257678
License: Usage for Mineralienatlas project only
Studenitsit

weiß/farbloses Aggregat von Studenitsit, Pobrdzhsky Potok & Peskanya, Baljevac na Ibru, Jarandol Basin, Raška, Zentral Serbien, Serbien; BB 2 mm, analysiert
Copyright: MinTreasure.com (Carsten Slotta)
Contribution: openpit 2020-05-23
Locality: Pobrdzhsky Potok & Peskanya / Balevats / Jarandol Basin / Serbien

Collectors Summary

Color farblos, graugelb
Streak color weiß
Hardness (Mohs) 5.50 - 6.00
Cleavages fehlt
Fracture nicht genannt
Crystal System monoklin, P21/c

Chemism

Chemical formula

NaCa2[B9O14(OH)4]·2H2O

Chemical composition

Calcium, Natrium, Bor, Sauerstoff, Wasserstoff

Unit weight: 528.5040462 u; Number of atoms in the formula: 40

Info

Empirical formula:

NaCa2[B9O14(OH)4]·2H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

1.53

8

20.00

1.0079470

8.0635760
Boron

B

18.41

9

22.50

10.8117000

97.3053000
Oxygen

O

60.55

20

50.00

15.9994300

319.9886000
Sodium

Na

4.35

1

2.50

22.9897702

22.9897702
Calcium

Ca

15.17

2

5.00

40.0784000

80.1568000

Analysis wt%

CaO : 20.84, Na2O : 5.96, B2O3 : 59.64, H2O : 13.64 (Ref: Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva, 1904-1974 95)

Strunz 9th edition incl. updates

6.GB.05

6: Borate
G: Heptaborate und andere Megaborate
B:
05:Studenitsit-Gruppe

Lapis Classification

V/K.08-005

V: NITRATE, CARBONATE UND BORATE
K: Schichtborate mit komplexen Baugruppen [Bx(O,OH)y]

Classification by Hölzel

6.GA.200

6: Borates
G: Heptaborates and further megaborates
A:
2: Phyllo-nonaborates - 9(4P+5T)

Dana 8th edition

26.07.08.01

26: Hydrated Borates Containing Hydroxyl or Halogen
07: Hydrated Borates Containing Hydroxyl or Halogen

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

farblos, graugelb

Streak color

weiß

max. Birefringence

0.032
Birefringence chart\! Studenitsite title=Birefringence chart Studenitsite

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

1.532

RI value β

1.538

RI value γ / ε

1.564

Ri mean

1.545

2V angle

Biaxial (+) 64°

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

14

Space Group

P21/c

Cell parameters a (Å)

11.499

Cell parameters b (Å)

12.588

Cell parameters c (Å)

10.530

Cell parameters a/b or c/a

0.913

Cell parameters c/b

0.837

Cell parameters α

90°

Cell parameters β

99.42

Cell parameters γ

90°

Z

4

Volumne (ų)

1503.657

X-Ray Powder Diffraction

5.41(70),
5.20(60),
4.20(60),
3.35(90),
3.27(60),
3.04(100),
2.210(60),
1.960(40)
XRD chart Studenitsite

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)

5.50 - 6.00

VHN (Hardness Vickers)

527 (50g)

Density (g/cm³)

2.27 (gemessen)

2.334 ( ρ calc. Mineralienatlas )

Cleavages

fehlt

Fracture

nicht genannt

Tenacity

zerbrechlich

(Co-)Type locality

(Co-)Type locality

Serbien/Jarandol Basin/Balevats/Pobrdzhsky Potok & Peskanya

Preface

Author (Name, Year)

Malinko & Anichich & Yoksimovich & Lisitsyn & Dorokhova & Yamnova & Vl

References

Zapiski Vserossiskogo Mineralogicheskogo Obshchetstva 124 (1995) (3), 57

Other languages

German

Studenitsit

Spanish

Studenitsita

English

Studenitsite

French

Studenitsite

Russian

Студеницит

Traditional Chinese

水硼鈉鈣石

Simplified Chinese

水硼钠钙石

CNMNC (IMA)-Number

IMA 1994-026

CNMNC symbol

Symbol

Sdn