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Reedmergnerite

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Reedmergnerit
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Reedmergnerit

Orangegelbe plattig-spätige, glasglänzende Aggregate des seltenen Natrium-Bor-Gerüstsilikats Reedmergnerit, in Quarzkörnern eingewachsen; Stufengröße: 2,5 x 2,1 cm; Fundort: Dara-i-Pioz, Tien-Sha...
Collection: McSchuerf
Copyright: McSchuerf
Contribution: Mineralienatlas 2004-04-18
Locality: Dara-i-Pioz (Darai-Pioz; Dara-i-Pech) / Republik-unterstellte Gebiete (Nohijahoi tobei Dschumhurij; Region of Republican Subordination) / Tadschikistan

Collectors Summary

Color farblos / beigegelb / orangegelb
Streak color weiß
Lustre Glasglanz
Hardness (Mohs) 6 - 6.5
Crystal System triklin, C1
Morphology plattige, spätig-derbe Aggregate; auch Körner bis ca. 4 cm in Quarzkernen eingewachsen

Chemism

Chem­ical formula

NaBSi3O8

Chem­ical com­po­si­tion

Natrium, Silicium, Bor, Sauerstoff

Unit weight: 246.0535002 u; Number of atoms in the formula: 13

Info

Empirical formula:

NaBSi3O8

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Boron

B

4.39

1

7.69

10.8117000

10.8117000
Oxygen

O

52.02

8

61.54

15.9994300

127.9954400
Sodium

Na

9.34

1

7.69

22.9897702

22.9897702
Silicon

Si

34.24

3

23.08

28.0855300

84.2565900

Anal­y­sis wt%

SiO2 : 73.13, B2O3 : 14.27, Na2O : 12.15 (Ref: American Mineralogist 60)

Strunz 9th edi­tion incl. updates

9.FA.35

9: Silikate (Germanate)
F: Gerüstsilikate (Tektosilikate) ohne zeolithisches H2O
A: Gerüstsilikate (Tektosilicates) ohne weitere [Anionen]
35:Feldspat: Plagioklas

Lapis Clas­sifica­tion

VIII/J.08-010

VIII: SILIKATE
J: Gerüstsilikate (mit Zeolithen)
8: Ohne tetraederfremde Anionen

Clas­sifica­tion by Hölzel

9.FD.340

9: SILICATES
F: Tektosilicates
D: Plagioclase-Group

Dana 8th edi­tion

76.01.04.01

76: Tektosilicates Tectosilicate Al-Si Framework
01: Tektosilicates Tectosilicate Al-Si Framework with Al-Si frameworks

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

 Feldspar group

Optical Properties

Color

farblos / beigegelb / orangegelb

Streak color

weiß

Diaphane­ity (Trans­parency)

durchscheinend

Lus­tre

Glasglanz

max. Birefrin­gence

0.019
Birefringence chart\! Reedmergnerite title=Birefringence chart Reedmergnerite

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

1.554

RI value β

1.565

RI value γ / ε

1.573

Ri mean

1.564

2V angle

Biaxial (-) 80°

Optical Data Luminescence

Color LW-UV (365nm)

  

grün

Color SW-UV (254nm)

  

rot

LW-UV Other Col­ors

  

grünlich

SW-UV Other Col­ors

  

grün

After­glow (Per­sistant Lumi­nes­cence)

keine Daten

Crystallography

Crystal Sys­tem

triklin

Class (H-M)

1

Space Group number

2

Space Group

C1

Cell param­e­ters a (Å)

7.833

Cell param­e­ters b (Å)

12.360

Cell param­e­ters c (Å)

6.803

Cell param­e­ters a/b or c/a

0.634

Cell param­e­ters c/b

0.550

Cell param­e­ters α

93.32

Cell param­e­ters β

116.35

Cell param­e­ters γ

92.5

Z

4

Volumne (ų)

587.443

X-Ray Pow­der Diffrac­tion

3.87(100),
3.65(30),
3.23(20),
3.14(30),
3.08(70),
3.03(20),
2.84(40),
2.383(20)
XRD chart Reedmergnerite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Morphol­ogy

plattige, spätig-derbe Aggregate; auch Körner bis ca. 4 cm in Quarzkernen eingewachsen

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

6 - 6.5

VHN (Hard­ness Vick­ers)

850 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.78

2.782 ( ρ calc. Mineralienatlas )

Radioac­tiv­ity

nicht bekannt

Chem­ical Prop­er­ties and Tests

chemisch und durch Röntgenanalyse

(Co-)Type locality

(Co-)Type locality

USA/Utah/Duchesne Co./Joseph Smith No. 1 Well

Preface

Occurrences

Pegmatite(Ägirinsyenite), welche Kalksteine und Sedimente intrudieren.

Asso­cia­tions

Mikroklin (weiß) Ägirin, Fluorit, Quarz

Rare­ness

selten

Author (Name, Year)

Milton & Axelrod & Grimaldi, 1954

Col­lector informa­tion

-

Addi­tional Informa­tion

Gehört zu den Feldspäten (Reedmergnerit-Danburit-Serie)

References

Rock-forming Minerals (Deer, Howie & Zussmann), 2nd ed., 4A (2001)

IMA group assignments

Other languages

German

Reedmergnerit

Spanish

Reedmergnerita

English

Reedmergnerite

French

Reedmergnerite

Russian

Ридмерджнерит

Traditional Chinese

矽硼鈉石

Simplified Chinese

硅硼钠石

Alternative Name

Traditional Chinese

鈉硼長石

Simplified Chinese

钠硼长石

CNMNC symbol

Symbol

Rm

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

German pages

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English pages

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Russian pages

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Mineral Dealer

German pages

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