Named for Sir Ronald Sydney Nyholm (1917-1971), born at Broken Hill, New South Wales, and chair and professor of Chemistry at University College, London from 1955 to 1971. The name recognises his numerous contributions to inorganic chemistry, in particular the coordination chemistry of the transition metals, and also recognises his Broken Hill roots. He received numerous awards, especially from chemical societies.

Type Locality:

ⓘ Block 14 opencut, Broken Hill, Broken Hill district, Yancowinna Co., New South Wales, Australia

Hureaulite group.

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Unique IdentifiersHide

Mindat ID:

39210

Long-form identifier:

mindat:1:1:39210:1

GUID
(UUID V4):

53db31dc-f7b4-4d1f-9f50-fc2ce64a4efe

IMA Classification of NyholmiteHide

IMA status:

Approved

IMA Formula:

Cd₃Zn₂(AsO₃OH)₂(AsO₄)₂ · 4H₂O

Approval year:

2008

First published:

2009

Classification of NyholmiteHide

Strunz-mindat (2024):

8.CB.10

8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H₂O
B : With only medium-sized cations, RO₄:H₂O = 1:1

Dana 8th ed.:

39.2.1.6

39 : HYDRATED ACID PHOSPHATES,ARSENATES AND VANADATES
2 : (AB)₅[HXO₄]₂[XO₄]₂.xH₂O

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Symbol	Source	Reference
Nyh	IMA–CNMNC	Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of NyholmiteHide

Lustre:

Vitreous

Transparency:

Transparent, Translucent

Colour:

Colourless, white

Streak:

White

Hardness:

3 - 3½ on Mohs scale

Hardness Data:

Measured

Tenacity:

Brittle

Density:

4.23 g/cm³ (Calculated)

Comment:

for empirical formula

Chemistry of NyholmiteHide

Mindat Formula:

Cd₃Zn₂(AsO₄)₂(HAsO₄)₂ · 4H₂O

Elements listed:

As, Cd, H, O, Zn - search for minerals with similar chemistry

Crystallography of NyholmiteHide

Crystal System:

Monoclinic

Class (H-M):

2/m - Prismatic

Space Group:

B2/b

Setting:

C2/c

Cell Parameters:

a = 18.062(4) Å, b = 9.341(19) Å, c = 9.844(2) Å
β = 96.17(3)°

Ratio:

a:b:c = 1.934 : 1 : 1.054

Unit Cell V:

1,651.23 Å³ (Calculated from Unit Cell)

Morphology:

White globules, tufted aggregates of fibrous crystals and radiating hemispheres of thin, colourless, bladed crystals.

Comment:

Crystal data from measurement at 123 K.

Crystal StructureHide

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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure

ID	Species	Reference	Link	Year	Locality	Pressure (GPa)	Temp (K)
0014593	Nyholmite	Elliott P, Turner P, Jensen P, Kolitsch U, Pring A (2009) Description and crystal structure of nyholmite, a new mineral related to hureaulite, from Broken Hill,New South Wales, Australia Mineralogical Magazine 73 723-735		2009	Broken Hill, New South Wales, Australia	0	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Nyholmite'
loop_
_publ_author_name
'Elliott P'
'Turner P'
'Jensen P'
'Kolitsch U'
'Pring A'
_journal_name_full 'Mineralogical Magazine'
_journal_volume 73 
_journal_year 2009
_journal_page_first 723
_journal_page_last 735
_publ_section_title
;
 Description and crystal structure of nyholmite, a new mineral related to hureaulite,
 from Broken Hill,New South Wales, Australia
;
_database_code_amcsd 0014593
_chemical_compound_source 'Broken Hill, New South Wales, Australia'
_chemical_formula_sum 'Cd2.89 Zn1.05 Cu.44 Mn.52 Al.04 Ca.02 Pb.04 (As2.98 P1.02) O20 H10'
_cell_length_a 18.062
_cell_length_b 9.341
_cell_length_c 9.844
_cell_angle_alpha 90
_cell_angle_beta 96.17
_cell_angle_gamma 90
_cell_volume 1651.231
_exptl_crystal_density_diffrn      4.204
_symmetry_space_group_name_H-M 'C 1 2/c 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,z'
  'x,-y,1/2+z'
  '1/2+x,1/2-y,1/2+z'
  '-x,y,1/2-z'
  '1/2-x,1/2+y,1/2-z'
  '-x,-y,-z'
  '1/2-x,1/2-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_U_iso_or_equiv
CdM1   0.00000  -0.10841   0.25000   0.73000   0.01560
ZnM1   0.00000  -0.10841   0.25000   0.27000   0.01560
ZnM2   0.31675   0.08527   0.68608   0.31000   0.01820
CuM2   0.31675   0.08527   0.68608   0.22000   0.01820
CdM2   0.31675   0.08527   0.68608   0.19000   0.01820
MnM2   0.31675   0.08527   0.68608   0.26000   0.01820
AlM2   0.31675   0.08527   0.68608   0.02000   0.01820
CdM3   0.17497   0.02916   0.36559   0.89000   0.01732
ZnM3   0.17497   0.02916   0.36559   0.08000   0.01732
CaM3   0.17497   0.02916   0.36559   0.01000   0.01732
PbM3   0.17497   0.02916   0.36559   0.02000   0.01732
AsT1   0.08304   0.18435   0.08981   0.66000   0.01300
PT1   0.08304   0.18435   0.08981   0.34000   0.01300
AsT2   0.16130   0.26692   0.62387   0.83000   0.01330
PT2   0.16130   0.26692   0.62387   0.17000   0.01330
O1   0.15890   0.27390   0.13560   1.00000   0.02570
O-H2   0.01090   0.29640   0.07910   1.00000   0.03100
O3   0.07550   0.06630   0.20900   1.00000   0.02700
O4   0.08400   0.11110  -0.06150   1.00000   0.02600
O5   0.16560   0.24900   0.45410   1.00000   0.02320
O6   0.07250   0.27490   0.65570   1.00000   0.02410
O7   0.20540   0.41600   0.67790   1.00000   0.02160
O8   0.20480   0.12810   0.70230   1.00000   0.02470
Wat9   0.41760  -0.00330   0.66130   1.00000   0.03640
Wat10   0.26040  -0.08410   0.53230   1.00000   0.02400
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_12
_atom_site_aniso_U_13
_atom_site_aniso_U_23
CdM1 0.01640 0.01070 0.01940 0.00000 0.00060 0.00000
ZnM1 0.01640 0.01070 0.01940 0.00000 0.00060 0.00000
ZnM2 0.02150 0.01090 0.02190 -0.00040 0.00080 0.00340
CuM2 0.02150 0.01090 0.02190 -0.00040 0.00080 0.00340
CdM2 0.02150 0.01090 0.02190 -0.00040 0.00080 0.00340
MnM2 0.02150 0.01090 0.02190 -0.00040 0.00080 0.00340
AlM2 0.02150 0.01090 0.02190 -0.00040 0.00080 0.00340
CdM3 0.01800 0.01250 0.02150 -0.00115 0.00223 -0.00237
ZnM3 0.01800 0.01250 0.02150 -0.00115 0.00223 -0.00237
CaM3 0.01800 0.01250 0.02150 -0.00115 0.00223 -0.00237
PbM3 0.01800 0.01250 0.02150 -0.00115 0.00223 -0.00237
AsT1 0.01460 0.00940 0.01480 0.00150 0.00060 -0.00090
PT1 0.01460 0.00940 0.01480 0.00150 0.00060 -0.00090
AsT2 0.01490 0.00700 0.01720 0.00044 -0.00120 -0.00037
PT2 0.01490 0.00700 0.01720 0.00044 -0.00120 -0.00037
O1 0.02400 0.02600 0.02700 -0.00440 0.00060 -0.00250
O-H2 0.03500 0.02900 0.02800 0.00800 -0.00150 -0.00860
O3 0.02500 0.02200 0.03400 -0.00360 0.00090 0.00810
O4 0.02400 0.02900 0.02400 0.01020 0.00190 -0.00450
O5 0.02900 0.01840 0.02100 0.00140 -0.00230 -0.00390
O6 0.02050 0.01740 0.03300 0.00000 -0.00070 -0.00200
O7 0.01930 0.01590 0.03100 -0.00190 0.00840 -0.00250
O8 0.02400 0.01430 0.03600 0.00170 0.00510 0.00760
Wat9 0.03300 0.03100 0.04500 -0.00800 0.00300 0.01500
Wat10 0.02600 0.02200 0.02500 0.00210 0.00770 0.00460

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
8.985 Å	(35)
8.283 Å	(100)
6.481 Å	(18)
6.169 Å	(29)
4.878 Å	(29)
4.656 Å	(18)
4.491 Å	(12)
4.296 Å	(12)

Geological EnvironmentHide

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
Stage 7: Great Oxidation Event	<2.4
47a : [Near-surface hydration of prior minerals]
47d : [Arsenates, antimonates, selenates, bismuthinates]
Stage 10b: Anthropogenic minerals	<10 Ka
55 : Anthropogenic mine minerals

Type Occurrence of NyholmiteHide

Type Locality:

ⓘ Block 14 opencut, Broken Hill, Broken Hill district, Yancowinna Co., New South Wales, Australia

General Appearance of Type Material:

White globules, tufted aggregates of fibrous crystals and radiating hemispheres of thin, colourless, bladed crystals.

Place of Conservation of Type Material:

South Australian Museum, Adelaide, South Australia (catalog no. G32511).

Geological Setting of Type Material:

Supergene mineral.

Associated Minerals at Type Locality:

Scorodite-Strengite Series

Lavendulan-Sampleite Series

Gypsum

Goldquarryite

Reference:

Elliott, P., Turner, P., Jensen, P., Kolitsch, U., Pring, A. (2009) Description and crystal structure of nyholmite, a new mineral related to hureaulite, from Broken Hill, New South Wales, Australia. Mineralogical Magazine: 73: 723-735.

Download:

http://rruff.info/rruff_1.0/uploads/MM73_723.pdf

Synonyms of NyholmiteHide

IMA2008-047

Relationship of Nyholmite to other SpeciesHide

Member of:

Hureaulite Group

Other Members of this group:

Chongite	Ca₃Mg₂(AsO₄)₂(AsO₃OH)₂ · 4H₂O	Mon. 2/m : B2/b
Giftgrubeite	CaMn₂Ca₂(AsO₄)₂(AsO₃OH)₂ · 4H₂O	Mon. 2/m : B2/b
Hureaulite	Mn²⁺₅(PO₃OH)₂(PO₄)₂ · 4H₂O	Mon. 2/m : B2/b
Miguelromeroite	MnMn₂Mn₂(AsO₄)₂(HAsO₄)₂ · 4H₂O	Mon. 2/m : B2/b
Sainfeldite	Ca₅(AsO₄)₂(AsO₃OH)₂ · 4H₂O	Mon. 2/m : B2/b
Villyaellenite	MnMn₂Ca₂(AsO₄)₂(HAsO₄)₂ · 4H₂O	Mon. 2/m : B2/b

Related Minerals - Strunz-mindat Grouping Hide

8.CB.	Krupičkaite	Cu₆[AsO₃(OH)]₆ · 8H₂O	Mon. 2/m : P2₁/b
8.CB.	Ermeloite	Al(PO₄) · H₂O	Mon. 2/m : B2/b
8.CB.05	Serrabrancaite	MnPO₄ · H₂O	Mon. 2/m : B2/b
8.CB.10	Hureaulite	Mn²⁺₅(PO₃OH)₂(PO₄)₂ · 4H₂O	Mon. 2/m : B2/b
8.CB.10	Villyaellenite	MnMn₂Ca₂(AsO₄)₂(HAsO₄)₂ · 4H₂O	Mon. 2/m : B2/b
8.CB.10	UM1997-09-AsO:CaHMgZn	(Mg,Ca,Zn)₅(AsO₄)₂(HAsO₄)₂ · 4H₂O	Mon.
8.CB.10	Miguelromeroite	MnMn₂Mn₂(AsO₄)₂(HAsO₄)₂ · 4H₂O	Mon. 2/m : B2/b
8.CB.10	Giftgrubeite	CaMn₂Ca₂(AsO₄)₂(AsO₃OH)₂ · 4H₂O	Mon. 2/m : B2/b
8.CB.15	Krautite	Mn(HAsO₄) · H₂O	Mon. 2 : P2₁
8.CB.20	Cobaltkoritnigite	Co(AsO₃OH) · H₂O	Tric. 1 : P1
8.CB.20	Koritnigite	Zn(AsO₃OH) · H₂O	Tric. 1 : P1
8.CB.20	Magnesiokoritnigite	Mg(AsO₃OH) · H₂O	Tric. 1 : P1
8.CB.25	Yvonite	Cu(HAsO₄) · 2H₂O	Tric. 1 : P1
8.CB.30	Geminite	Cu²⁺(AsO₃OH) · H₂O	Tric. 1 : P1
8.CB.35	Schubnelite	Fe³⁺VO₄ · H₂O	Tric. 1 : P1
8.CB.40	Radovanite	Cu₂Fe³⁺(AsO₄)(HAs³⁺O₃)₂ · H₂O	Orth. mmm (2/m 2/m 2/m) : Pnma
8.CB.45	Kazakhstanite	Fe³⁺₅V⁴⁺₃V⁵⁺₁₂O₃₉(OH)₉ · 9H₂O	Mon.
8.CB.50	Kolovratite	Ni_xZn_y(VO₄)_0.67(x+y) · nH₂O
8.CB.60	Burgessite	Co₂(H₂O)₄[AsO₃(OH)]₂(H₂O)	Mon. 2/m
8.CB.60	Honzaite	Ni₂(AsO₃OH)₂ · 5H₂O	Mon. 2/m : P2₁/m
8.CB.65	Cardite	Zn_5.5(AsO₄)₂(AsO₃OH)(OH)₃ · 3H₂O	Orth. mmm (2/m 2/m 2/m) : Cmcm

Other InformationHide

Notes:

Slowly soluble in cold 10% HCl.

Health Risks:

No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for NyholmiteHide

mindat.org URL:

https://www.mindat.org/min-39210.html
Please feel free to link to this page.

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External Links:

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Raman and XRD data at RRUFF project

References and PDF downloads at RRUFF project

American Mineralogist Crystal Structure Database

Handbook of Mineralogy page PDF

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References for NyholmiteHide

Reference List:

Williams, P.A., Hatert, F., Pasero, M. (2008) New minerals approved in 2008. in International Mineralogical Association: 1-13.

Piilonen, P.C., Poirier, G. (2010) New mineral names. American Mineralogist: 95: 1357-1361.

Piilonen, P.C., Rowe, R., Poirier, G., Tait, K.T. (2011) New mineral names. American Mineralogist: 96: 1654-1661.

Caboni, F., Vinci, A., Cámara, F., Marengo, A., Bittarello, E., Brizio, P., Antonazzo, I., Ciriotti, M.E. (2018): Nyholmite dalla Sardegna - Secondo ritrovamento al mondo. Micro, 16, 157-164 (in Italian with abstracts in English, French and German).

(2023) Nyholmite. Handbook of Mineralogy. Mineralogical Society of America

Localities for NyholmiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the

symbol to view information about a locality. The

symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed.

- This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality.

- Good crystals or important locality for species.

- World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). ~~Struck out~~ - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.


Australia (TL)
New South Wales Yancowinna Co. Broken Hill district Broken Hill ⓘ Block 14 opencut (TL)	Elliott et al. (2009)

Italy
Sardinia South Sardinia Province Fluminimaggiore ⓘ Sa Menga Mine	Caboni et al. (2018)

Nyholmite