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Alwilkinsite-(Y)

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Alwilkinsit-(Y)

gelbe Kristallkrusten von Alwilkinsit-(Y), Limes, Val di Daone, Trentino, Italien; BB < 1 mm

MinTreasure.com (Carsten Slotta)

Contribution: openpit 2019-12-21

Locality: Limes / Val di Daone / Judikarien (Val Giudicarie) / Trentino (Trient), Provinz / Trentino-Südtirol (Trentino-Alto Adige), Region / Italien

Collectors Summary

Color

gelblich grün

Hardness (Mohs)

2 - 2.5

Fracture

splittrig

Crystal System

orthorhombisch, P2₁2₁2₁

Chemism

Chemical formula

Y(UO₂)₃(SO₄)₂O(OH)₃(H₂O)₇·7H₂O

Empirical formula (analysis)

(Y_0.66Dy_0.08Gd_0.06Er_0.05Nd_0.03Yb_0.03Sm_0.02Ce_0.01)_Σ0.94 (H₂O)₇[(UO₂)₃(S_1.01O₄)₂O(OH)₃]·7H₂O

Additional chem. information

Sekundäre Alterungsphase

Chemical composition

Yttrium, Sauerstoff, Schwefel, Uran, Wasserstoff

Unit weight: 1425.49018232 u; Number of atoms in the formula: 68.96

Info

Empirical formula:

(Y_0.66Dy_0.08Gd_0.06Er_0.05Nd_0.03Yb_0.03Sm_0.02Ce_0.01)(H₂O)₇[(UO₂)₃(S_1.01O₄)₂O(OH)₃]·7H₂O

Element	Symbol	Weight%	Atoms	Atoms%	Atom weight (u)	Sum weight (u)
Hydrogen	H	2.19	31	44.95	1.0079470	31.2463570
Oxygen	O	35.92	32	46.40	15.9994300	511.9817600
Sulfur	S	4.54	2.02	2.93	32.0655000	64.7723100
Yttrium	Y	4.12	0.66	0.96	88.9058520	58.6778623
Cerium	Ce	0.10	0.01	0.01	140.1161000	1.4011610
Neodymium	Nd	0.30	0.03	0.04	144.2430000	4.3272900
Samarium	Sm	0.21	0.02	0.03	150.3630000	3.0072600
Gadolinium	Gd	0.66	0.06	0.09	157.2530000	9.4351800
Dysprosium	Dy	0.91	0.08	0.12	162.5001000	13.0000080
Erbium	Er	0.59	0.05	0.07	167.2593000	8.3629650
Ytterbium	Yb	0.36	0.03	0.04	173.0430000	5.1912900
Uranium	U	50.09	3	4.35	238.0289130	714.0867390

Search for minerals with similar chemistry

Strunz 9th edition incl. updates

7.EC.

7: Sulfate (Selenate, Tellurate, Chromate, Molybdate, Wolframate)
E: Uranylsulfate
C: Mit mittelgroßen und großen [Kationen]

IMA status

anerkannt - CNMNC Jan. 2016

Mineral status

anerkanntes Mineral

Optical Properties

Color	gelblich grün
max. Birefringence	0.028
	$Birefringence chart\! Alwilkinsite-(Y) title=Birefringence chart Alwilkinsite-(Y)$ 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	α = 1.573(1)
RI value β	β = 1.581(1)
RI value γ / ε	γ = 1.601(1)
Ri mean	1.585
2V angle	Biaxial (+) 65.3(1)° (gemessen)
Orientation	X = c, Y = a, Z = b
Dispersion	r < v, schwach
Pleochroism	keiner

Optical Data Luminescence

Luminescence

matte grünlich graue Floreszenz

Crystallography

Crystal System	orthorhombisch
Class (H-M)	222
Space Group number	19
Space Group	P2₁2₁2₁
Cell parameters a (Å)	11.6194(5)
Cell parameters b (Å)	12.4250(6)
Cell parameters c (Å)	19.449(1)
Cell parameters a/b or c/a	0.935
Cell parameters c/b	1.565
Cell parameters α	90°
Cell parameters β	90°
Cell parameters γ	90°
Z	4
Volumne (Å³)	2807.872
Kristall structure	neuer Strukturtyp, Struktur bestimmt
X-Ray Powder Diffraction	9.88(100), 7.47(13), 5.621(17), 4.483(18), 3.886(14), 3.322(46), 3.223(13), 3.145(16)
	Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Physical Properties

Hardness (Mohs)	2 - 2.5
Density (g/cm³)	3.371 (berechnet)
	3.372 ( ρ calc. Mineralienatlas )
Fracture	splittrig
Tenacity	leicht flexibel bevor spröde

(Co-)Type locality

(Co-)Type locality	USA /Utah /San Juan Co./White Canyon District /Red Canyon /Blue Lizard Mine
Type material	Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, CA 90007, USA
Collection number of type material	65629

Preface

Author (Name, Year)

Kampf, A.R., Plášil, J., Cejka, J., Marty, J., Škoda, R. and Lapcák, L. (2016)

References

Kampf, A.R., Plášil, J., Cejka, J., Marty, J., Škoda, R. and Lapcák, L. (2016) Alwilkinsite-(Y), IMA 2015-097. CNMNC Newsletter No. 29, February 2016, page 204; Mineralogical Magazine, 80, 199–205

Authors: Kampf, Anthony R.; Plášil, Jakub; Čejka, Jiří; Marty, Joe; Škoda, Radek; Lapčák, Ladislav - Alwilkinsite-(Y), a new rare-earth uranyl sulfate mineral from the Blue Lizard mine, San Juan County, Utah, USA - Mineralogical Magazine, Appeared or available online: 10. August 2016

Related minerals "Strunz Classification" (9. Edition) [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Fermiite	Na₄(UO₂)(SO₄)₃·3H₂O orthorhombisch : mm2 : Pmn2₁	7.EC.
Bobcookite	NaAl(UO₂)₂(SO₄)₄·18H₂O triklin : 1 : P1	7.EC.
Feynmanite	Na(UO₂)(SO₄)(OH)·3.5H₂O monoklin : 2/m : P2/n	7.EC.
Meisserite	Na₅(UO₂)(SO₄)₃(SO₃OH)(H₂O) triklin : 1 : P1	7.EC.
Běhounekite	U(SO₄)₂(H₂O)₄ orthorhombisch : mmm : Pnma	7.EC.
Klaprothite	Na₆(UO₂)(SO₄)₄·4H₂O monoklin : 2/m : P2₁/c	7.EC.
Ottohahnite	Na₆(UO₂)₂(SO₄)₅(H₂O)₇·1.5H₂O triklin : 1 : P1	7.EC.
Péligotite	Na₆(UO₂)(SO₄)₄·4H₂O triklin : 1 : P1	7.EC.
Mathesiusite	K₅(UO₂)₄(SO₄)₄(VO₅)·4H₂O tetragonal : 4/m : P4/n	7.EC.
Navrotskyite	K₂Na₁₀(UO₂)₃(SO₄)₉·2H₂O orthorhombisch : mmm : Pbcm	7.EC.
Belakovskiite	Na₇(UO₂)(SO₄)₄(SO₃OH)(H₂O)₃ triklin : 1 : P1	7.EC.
Bluelizardite	Na₇(UO₂)(SO₄)₄Cl(H₂O)₂ monoklin : 2/m : C2/c	7.EC.
Geschieberite	K₂(UO₂)(SO₄)₂·2H₂O orthorhombisch : mm2 : Pna2₁	7.EC.
Adolfpateraite	K(UO₂)(SO₄)(OH)(H₂O) monoklin : 2/m : P2₁/c	7.EC.
Plášilite	Na(UO₂)(SO₄)(OH)·2H₂O monoklin : 2/m : P2₁/c	7.EC.
Seaborgite	LiK₂Na₆(UO₂)(SO₄)₅(SO₃OH)(H₂O) triklin : 1 : P1	7.EC.
Wetherillite	Na₂Mg(UO₂)₂(SO₄)₄·18H₂O monoklin : 2/m : P2₁/c	7.EC.
Oppenheimerite	Na₂(UO₂)(SO₄)₂·3H₂O triklin : 1 : P1	7.EC.
Alwilkinsite-(Y)	Y(UO₂)₃(SO₄)₂O(OH)₃(H₂O)₇·7H₂O orthorhombisch : 222 : P2₁2₁2₁	7.EC.
Ammoniomathesiusite	(NH₄)₅(UO₂)₄(SO₄)₄(VO₅)·4H₂O tetragonal : 4/m : P4/n	7.EC.
Pseudomeisserite-(NH4)	(NH₄)₂Na₄[(UO₂)₂(SO₄)₅]·4H₂O monoklin : 2/m : P2₁/c	7.EC.
Zippeite	K₃(UO₂)₄(SO₄)₂O₃(OH)·3H₂O monoklin : 2 : C2	7.EC.05
Redcanyonite	(NH₄)₂Mn[(UO₂)₄O₄(SO₄)₂](H₂O)₄ monoklin : 2/m : C2/m	7.EC.05
Zinczippeite	Zn(UO₂)₂(SO₄)O₂·3.5H₂O monoklin : 2/m : C2/m	7.EC.05
Natrozippeite	Na₅(UO₂)₈(SO₄)₄O₅(OH)₃·12H₂O monoklin : 2/m : P2₁/n	7.EC.05
Cobaltzippeite	Co(UO₂)₂(SO₄)O₂·3.5H₂O monoklin : 2/m : C2/m	7.EC.05
Nickelzippeite	Ni₂(UO₂)₆(SO₄)₃(OH)₁₀·16H₂O monoklin : 2/m : C2/m	7.EC.05
Pseudojohannite	Cu_6.5(UO₂)₈O₈(SO₄)₄(OH)₅·25H₂O triklin : 1 : P1	7.EC.05
Ammoniozippeite	(NH₄)₂[(UO₂)₂(SO₄)O₂]·H₂O orthorhombisch : mmm : Ccmb	7.EC.05
Magnesiozippeite	Mg(UO₂)₂(SO₄)O₂·3.5H₂O monoklin : 2/m : C2/m	7.EC.05
Rabejacite	Ca_2[(UO₂)₄O₄(SO₄)₂](H₂O)₈ triklin : 1 : P1	7.EC.10
Sejkoraite-(Y)	Y₂(UO₂)₈O₆(SO₄)₄(OH)₂·26H₂O triklin : 1 : P1	7.EC.15
Marécottite	Mg₃[(UO₂)₄O₃(OH)(SO₄)₂]₂(H₂O)₂₈ triklin : 1 : P1	7.EC.15
Plavnoite	K_0.8Mn_0.6[(UO₂)₂O₂(SO₄)]·3.5H₂O monoklin : 2/m : C2/c	7.EC.20

Other languages

German	Alwilkinsit-(Y)
English	Alwilkinsite-(Y)
Russian	Алвилкинсит-(Y)

IMA Number

IMA 2015-097

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

German pages	DeWikiPedia - search for: Alwilkinsit-(Y) Google-Bilder-Suche - search for: Alwilkinsit-(Y) Mineralogisch-Petrographisches-Institut Hamburg - search for: Alwilkinsit-(Y)
English pages	Mindat - search for: Alwilkinsite-(Y) Webmineral - search for:Alwilkinsite-(Y) Handbook-of-Mineralogy - search for: Alwilkinsite-(Y) RRUFF - Raman, XRD and other mineral data - search for: Alwilkinsite-(Y) RRUFF - References and PDF downloads - search for: Alwilkinsite-(Y) American-Mineralogist-Crystal-Structure-Database - search for: Alwilkinsite-(Y) Athena - search for: Alwilkinsite-(Y)
Russian pages	Webmineral.ru - search for: Алвилкинсит-(Y)

Mineral Dealer

German pages

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Crystal-Treasure.com - search for: Alwilkinsit-(Y)
Bosse - search for: Alwilkinsit-(Y)

Locations with GPS information