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Waimirite-(Y)

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Waimirit-(Y)
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Waimirit-(Y)
weiße Massen von Waimirit-(Y), Pitinga Mine, Presidente Figueiredo, Amazonas, Brasilien; BB < 1 mm
Copyright: MinTreasure.com (Carsten Slotta); Contribution: openpit
Location: Brasilien/Norden (Região Norte)/Amazonas/Presidente Figueiredo/Pitinga Mine
Mineral: Waimirite-(Y)
Image: 1579436497
License: Usage for Mineralienatlas project only
Waimirit-(Y)

weiße Massen von Waimirit-(Y), Pitinga Mine, Presidente Figueiredo, Amazonas, Brasilien; BB < 1 mm
Copyright: MinTreasure.com (Carsten Slotta)
Contribution: openpit 2020-01-19
Locality: Pitinga Mine / Presidente Figueiredo / Amazonas / Norden (Região Norte) / Brasilien

Collectors Summary

Color blass rosa, weiß
Streak color weiß
Crystal System orthorhombisch, Pnma
Morphology Waimirit-(Y) tritt in makroskopischen massiven Äderchen auf. Kristalle ≅ 1 mm in abgerundeten Aggregaten

Chemism

Chemical formula

YF3

Empirical formula (analysis)

(Y0.69Dy0.08Er0.06Yb0.05Ca0.03Gd0.02Ho0.02Nd0.01Sm0.01Tb0.01Tm0.01Lu0.01)Σ1.00[F2.54☐0.25O0.21]Σ3.00

Additional chem. information

Yttrium-Fluorit

Chemical composition

Yttrium, Fluor

Unit weight: 160.2689234175 u; Number of atoms in the formula: 4

Info

Empirical formula:

(Y0.69Dy0.08Er0.06Yb0.05Ca0.03Gd0.02Ho0.02Nd0.01Sm0.01Tb0.01Tm0.01Lu0.01)[F2.54Vc0.25O0.21]

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Vacancy

Vc

0.00

0.25

6.25

0.0000000

0.0000000
Oxygen

O

2.10

0.21

5.25

15.9994300

3.3598803
Fluorine

F

30.11

2.54

63.50

18.9984033

48.2559443
Calcium

Ca

0.75

0.03

0.75

40.0784000

1.2023520
Yttrium

Y

38.28

0.69

17.25

88.9058520

61.3450379
Neodymium

Nd

0.90

0.01

0.25

144.2430000

1.4424300
Samarium

Sm

0.94

0.01

0.25

150.3630000

1.5036300
Gadolinium

Gd

1.96

0.02

0.50

157.2530000

3.1450600
Terbium

Tb

0.99

0.01

0.25

158.9253420

1.5892534
Dysprosium

Dy

8.11

0.08

2.00

162.5001000

13.0000080
Holmium

Ho

2.06

0.02

0.50

164.9303220

3.2986064
Erbium

Er

6.26

0.06

1.50

167.2593000

10.0355580
Thulium

Tm

1.05

0.01

0.25

168.9342120

1.6893421
Ytterbium

Yb

5.40

0.05

1.25

173.0430000

8.6521500
Lutetium

Lu

1.09

0.01

0.25

174.9671000

1.7496710

Analysis wt%

F : 29.27, Ca : 0.83, Y : 37.25, La : 0.19, Ce : 0.30, Pr : 0.15, Nd : 0.65, Sm : 0.74, Gd : 1.86, Tb : 0.78, Dy : 8.06, Ho : 1.85, Er : 6.38, Tm : 1.00, Yb : 5.52, Lu : 0.65, O : (2.05), Total : (97.53) wt.%

Strunz 9th edition incl. updates

3.AC.

3: Halide (Fluoride, Chloride, Bromide, Iodide)
A: Einfache Halogenide ohne H2O
C: M:X = 1:3

Lapis Classification

III/A.10-030

III: HALOGENIDE (Fluoride, Chloride, Bromide, Jodide)
A: Einfache Halogenide
10: Wasserfrei, Metall : Halogen = 1:2, 1:3

IMA status

anerkannt - CNMNC Newsletter No. 19, February 2014

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Perovskite supergroup  ⇒ Non-stoichiometric perovskites  ⇒ Oskarssonit subgroup

Optical Properties

Color

blass rosa, weiß

Streak color

weiß

Diaphaneity (Transparency)

transparent, durchscheinend

RI value α / ω / n

n = 1.54 - 1.56

2V angle

Biaxial

Crystallography

Crystal System

orthorhombisch

Class (H-M)

mmm

Space Group number

62

Space Group

Pnma

Cell parameters a (Å)

6.386(1)

Cell parameters b (Å)

6.877(1)

Cell parameters c (Å)

4.401(1)

Cell parameters a/b or c/a

0.929

Cell parameters c/b

0.64

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

4

Volumne (ų)

193.277

Kristall structure

Bekanntes synthetisches Analog

X-Ray Powder Diffraction

3.707(26), 3.623(78), 3.438(99), 3.205(100), 2.894(59), 1.937(33), 1.916(24), 1.862(27)
XRD chart Waimirite-(Y)

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

Morphology

Waimirit-(Y) tritt in makroskopischen massiven Äderchen auf. Kristalle ≅ 1 mm in abgerundeten Aggregaten

Crystal Structure 3D

Open larger view

Physical Properties

Density (g/cm³)

5.586 (berechnet, empirische Formel), 5.063

5.507 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Brasilien/Norden (Região Norte)/Amazonas/Presidente Figueiredo/Pitinga Mine

Type material

Museu de Geociências, Instituto de Geociências, Universidade de São Paulo, São Paulo, Brazilien

Museu de Mineralogia Luiz Englert, Departamento de Mineralogia e Petrologia, Instituto de Geociências, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazilien

Collection number of type material

DR919 (São Paulo), 3620 (Porto Alegre)

Preface

Associations

"K-Feldspat", Albit, Quarz, Riebeckit, Biotit, Muskovit, Cryolit, Zirkon, Polylithionit, Kassiterit, Pyrochlor-Gruppen-Mineralien, "Columbit", Thorit, Natives Blei, Hämatit, Galenit, Fluorit, Xenotim-(Y), Gagarinit-(Y), Fluocerit-(Ce), Genthelvit–Helvit, Topas, "Illit", Kaolinit und "Chlorit"

Author (Name, Year)

Artur C. Bastos Neto, Vitor P. Pereira, Daniel Atencio*, José T.M.M. Ferron and José M.V. Coutinho (2013)

References

Bastos Neto, A.C., Pereira, V.P., Atencio, D., Ferron, J.T.M.M. and Coutinho, J.M.V. (2014) Waimirite-(Y), IMA 2013-108. CNMNC Newsletter No. 19, February 2014, page 167; Mineralogical Magazine, 78, 165-170.

Primeira Notícia da Descoberta de Waimirita e Atroarita, Dois Novos Minerais na Mina de Pitinga, AM, Brasil - ORLANDO RENATO RIGON MINUZZI, JOSÉ MAXIMINO TADEU MIRRAS FERRON, ARTUR CEZAR BASTOS NETO1 & VITOR PAULO PEREIRA - Pesquisas em Geociências, 30(1): 99-101, 2003

Atencio, D., Bastos Neto, A.C., Pereira, V.P., Ferron, J.T.M.M., Hoshino, M., Moriyama, T., Watanabe, Y., Miyawaki, R., Coutinho, J.M.V., Andrade, M.B., Domanik, K., Chukanov, N.V., Momma, K., Hirano, H., Tsunematsu, M. - Waimirite-(Y), orthorhombic YF3, a new mineral from the Pitinga mine, Presidente Figueiredo, Amazonas, Brazil and from Jabal Tawlah, Saudi Arabia: description and crystal structure. Mineralogical Magazine, 79 (2015), 767-780.

IMA group assignments

 
Perovskite supergroup
 
 
 

 
 
Non-stoichiometric perovskites
 
 
 

 
 
 
Oskarssonit subgroup
 
 
 

 
 
 
 
Oskarssonite
AlF3
trigonal
R3c

 
 
 
 
Waimirite-(Y)
YF3
orthorhombisch
Pnma

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Actuality: 28. Sep 2023 - 11:09:04

Other languages

German

Waimirit-(Y)

Spanish

Waimirita-(Y)

English

Waimirite-(Y)

Russian

Ваймирит-(Y)

CNMNC (IMA)-Number

IMA 2013-108

CNMNC symbol

Symbol

Wai-Y

IDs

GUSID (Global unique identifier short form) iziBqq9iR0KZ77oEni8Sgw
GUID (Global unique identifier) AA81388B-62AF-4247-99EF-BA049E2F1283
Database ID 7722