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Cranswickite

A valid IMA mineral species

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Cranswickite

Calingasta, Calingasta Department, San Juan Province, Argentina

Cranswickite

Calingasta, Calingasta Department, San Juan Province, Argentina

Cranswickite

Calingasta, Calingasta Department, San Juan Province, Argentina

Cranswickite

Calingasta, Calingasta Department, San Juan Province, Argentina

Cranswickite

Calingasta, Calingasta Department, San Juan Province, Argentina

Cranswickite

Calingasta, Calingasta Department, San Juan Province, Argentina

Cranswickite

Calingasta, Calingasta Department, San Juan Province, Argentina

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About CranswickiteHide

Lachlan M.D. Cranswick

Formula:

MgSO₄ · 4H₂O

Colour:

White

Specific Gravity:

1.917

Crystal System:

Monoclinic

Name:

The name is in honour of Lachlan M.D. Cranswick (29 Sep 1968 Victoria, Australia - 18 Jan 2010 Deep River, Renfrew County, Ontario, Canada) who helped to develop and maintain the Collaborative Computational Project No. 14 in Powder and Small Molecule Single Crystal Diffraction (CCP14). Lachlan was expert in powder X-ray and neutron diffraction using the Rietveld method. http://journals.iucr.org/j/issues/2010/05/01/es0383/index.html

Type Locality:

ⓘ Calingasta, Calingasta Department, San Juan Province, Argentina

Dimorph of:

Starkeyite

Closely related to starkeyite.
Formerly referred to as "β-Starkeyite"

Unique IdentifiersHide

Mindat ID:

40267

Long-form identifier:

mindat:1:1:40267:5

GUID
(UUID V4):

a5e96818-e907-455a-b96b-8ba6f7441ef2

IMA Classification of CranswickiteHide

IMA status:

Approved

IMA Formula:

Mg(SO₄) · 4H₂O

Approval year:

2010

First published:

2011

Type description reference:

Peterson, R. C. (2011) Cranswickite MgSO₄·4H₂O, a new mineral from Calingasta, Argentina. American Mineralogist, 96 (5) 869-877 doi:10.2138/am.2011.3673

Classification of CranswickiteHide

Strunz-mindat (2023):

7.CB.15

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
C : Sulfates (selenates, etc.) without additional anions, with H₂O
B : With only medium-sized cations

Dana 8th ed.:

29.6.6.7

29 : HYDRATED ACID AND NORMAL SULFATES
6 : AXO₄·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
Cwk	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 CranswickiteHide

Transparency:

Transparent

Colour:

White

Streak:

White

Density:

1.917 g/cm³ (Measured) 1.918 g/cm³ (Calculated)

Chemistry of CranswickiteHide

Mindat Formula:

MgSO₄ · 4H₂O

Elements listed:

H, Mg, O, S - search for minerals with similar chemistry

Crystallography of CranswickiteHide

Crystal System:

Monoclinic

Class (H-M):

m - Domatic

Space Group:

Setting:

Cell Parameters:

a = 11.9172(4) Å, b = 5.1704(1) Å, c = 12.1880(3) Å
β = 117.538(2)°

Ratio:

a:b:c = 2.305 : 1 : 2.357

Unit Cell V:

665.90 Å³ (Calculated from Unit Cell)

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)
0018329	Cranswickite	Peterson R C (2011) Cranswickite MgSO44H2O, a new mineral from Calingasta, Argentina* American Mineralogist 96 869-877		2011	Calingasta, San Juan Province, Argentina	0	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Cranswickite'
loop_
_publ_author_name
'Peterson R C'
_journal_name_full 'American Mineralogist'
_journal_volume 96 
_journal_year 2011
_journal_page_first 869
_journal_page_last 877
_publ_section_title
;
 Cranswickite MgSO4*4H2O, a new mineral from Calingasta, Argentina
;
_database_code_amcsd 0018329
_chemical_compound_source 'Calingasta, San Juan Province, Argentina'
_chemical_formula_sum 'Mg S O8 H8'
_cell_length_a 11.9236
_cell_length_b 5.1736
_cell_length_c 12.1958
_cell_angle_alpha 90
_cell_angle_beta 117.548
_cell_angle_gamma 90
_cell_volume 667.037
_exptl_crystal_density_diffrn      1.916
_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_U_iso_or_equiv
Mg   0.00000   0.00000   0.50000   0.01507
S   0.00000   0.31310   0.75000   0.01988
O1   0.11650   0.51600   0.29250   0.02660
O2   0.98340   0.14240   0.64560   0.02913
Wat3   0.87590   0.70940   0.49760   0.01203
Wat4   0.85430   0.23470   0.37320   0.00469

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
5.284 Å	(100)
4.62 Å	(33)
3.983 Å	(25)
3.940 Å	(49)
3.176 Å	(50)
3.127 Å	(24)
2.575 Å	(26)
1.952 Å	(22)

Geological EnvironmentHide

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
Stage 5: Initiation of plate tectonics	<3.5-2.5
40 : Regional metamorphism (greenschist, amphibolite, granulite facies)
Stage 7: Great Oxidation Event	<2.4
46 : Near-surface hydrothermal alteration of minerals (see also #22)

Type Occurrence of CranswickiteHide

Type Locality:

ⓘ Calingasta, Calingasta Department, San Juan Province, Argentina

General Appearance of Type Material:

Fine-grained white powder, curved fibers

Place of Conservation of Type Material:

Royal Ontario Museum, Toronto, Ontario, Canada, accession number 55368

Geological Setting of Type Material:

Cracks in medisedimentary rocks

Associated Minerals at Type Locality:

Quartz

Illite

Gypsum

Reference:

Peterson, R.C. (2011) Cranswickite MgSO4·4H2O, a new mineral from Calingasta, Argentina. American Mineralogist: 96: 869-877.

Download:

https://rruff.info/rruff_1.0/uploads/AM96_869.pdf

Synonyms of CranswickiteHide

β-Starkeyite

IMA2010-016

UM1999-28-SO:HMg

Related Minerals - Strunz-mindat Grouping Hide

7.CB.	Sarvodaite	Al₂(SO₄)₃ · 5H₂O	Mon. 2/m : P2₁/m
7.CB.02	Voudourisite	CdSO₄ · H₂O	Mon. 2/m : P2₁/m
7.CB.05	Dwornikite	Ni(SO₄) · H₂O	Mon. 2/m : B2/b
7.CB.05	Gunningite	ZnSO₄ · H₂O	Mon. 2/m : B2/b
7.CB.05	Kieserite	MgSO₄ · H₂O	Mon. 2/m : B2/b
7.CB.05	Poitevinite	(Cu,Fe)SO₄ · H₂O	Tric. 1 : P1
7.CB.05	Szmikite	MnSO₄ · H₂O	Mon. 2/m : B2/b
7.CB.05	Szomolnokite	FeSO₄ · H₂O	Mon. 2/m : B2/b
7.CB.05	Cobaltkieserite	CoSO₄ · H₂O	Mon. 2/m : B2/b
7.CB.07	Sanderite	MgSO₄ · 2H₂O	Orth. 2 2 2 : P2₁ 2₁ 2₁
7.CB.10	Bonattite	CuSO₄ · 3H₂O	Mon. m : Bb
7.CB.12	Belogubite	CuZn(SO₄)₂ · 10H₂O	Tric. 1 : P1
7.CB.15	Aplowite	(Co,Mn,Ni)SO₄ · 4H₂O	Mon. 2/m
7.CB.15	Boyleite	(Zn,Mg)SO₄ · 4H₂O	Mon. 2/m : P2₁/b
7.CB.15	Ilesite	(Mn,Zn,Fe)SO₄ · 4H₂O	Mon. 2/m
7.CB.15	Rozenite	FeSO₄ · 4H₂O	Mon. 2/m : P2₁/b
7.CB.15	Starkeyite	MgSO₄ · 4H₂O	Mon. 2/m : P2₁/b
7.CB.15	Drobecite	CdSO₄ · 4H₂O	Mon. 2/m : P2₁/m
7.CB.20	Chalcanthite	CuSO₄ · 5H₂O	Tric. 1 : P1
7.CB.20	Jôkokuite	MnSO₄ · 5H₂O	Tric. 1 : P1
7.CB.20	Pentahydrite	MgSO₄ · 5H₂O	Tric. 1 : P1
7.CB.20	Siderotil	FeSO₄ · 5H₂O	Tric.
7.CB.25	Bianchite	Zn(SO₄) · 6H₂O	Mon. 2/m : P2/m
7.CB.25	Chvaleticeite	Mn(SO₄) · 6H₂O	Mon. 2/m : B2/b
7.CB.25	Ferrohexahydrite	FeSO₄ · 6H₂O	Mon. 2/m : B2/b
7.CB.25	Hexahydrite	MgSO₄ · 6H₂O	Mon. 2/m : P2/m
7.CB.25	Moorhouseite	Co(SO₄) · 6H₂O	Mon. 2/m : B2/b
7.CB.25	Nickelhexahydrite	Ni(SO₄) · 6H₂O	Mon. 2/m : B2/b
7.CB.30	Retgersite	NiSO₄ · 6H₂O	Tet. 4 2 2 : P4₁ 2₁ 2
7.CB.35	Bieberite	CoSO₄ · 7H₂O	Mon. 2/m : P2/m
7.CB.35	Boothite	CuSO₄ · 7H₂O	Mon. 2/m : P2₁/b
7.CB.35	Mallardite	MnSO₄ · 7H₂O	Mon. 2/m : P2/m
7.CB.35	Melanterite	Fe²⁺(H₂O)₆SO₄ · H₂O	Mon. 2/m : P2₁/b
7.CB.35	Zincmelanterite	(Zn,Cu,Fe)SO₄ · 7H₂O	Mon. 2/m : P2₁/b
7.CB.35	Alpersite	(Mg,Cu)(SO₄) · 7H₂O	Mon. 2/m : P2₁/b
7.CB.40	Epsomite	MgSO₄ · 7H₂O	Orth. 2 2 2 : P2₁ 2₁ 2₁
7.CB.40	Goslarite	ZnSO₄ · 7H₂O	Orth. 2 2 2 : P2₁ 2₁ 2₁
7.CB.40	Morenosite	NiSO₄ · 7H₂O	Orth. 2 2 2 : P2₁ 2₁ 2₁
7.CB.45	Alunogen	Al₂(SO₄)₃ · 17H₂O	Tric. 1 : P1
7.CB.45	Meta-alunogen	Al₂(SO₄)₃ · 12H₂O	Orth.
7.CB.50	Aluminocoquimbite	Al₂Fe₂(SO₄)₆(H₂O)₁₂ · 6H₂O	Trig. 3m (3 2/m) : P3 1c
7.CB.50	Lazaridisite	3CdSO₄ · 8H₂O	Mon. 2/m : B2/b
7.CB.52	Pararaisaite	CuMg[Te⁶⁺O₄(OH)₂] · 6H₂O	Mon. 2/m : P2₁/b
7.CB.55	Coquimbite	AlFe₃(SO₄)₆(H₂O)₁₂ · 6H₂O	Trig. 3m (3 2/m) : P3 1c
7.CB.55	Paracoquimbite	Fe₄(SO₄)₆(H₂O)₁₂ · 6H₂O	Trig. 3 : R3
7.CB.55	Rhomboclase	(H₅O₂)Fe³⁺(SO₄)₂ · 2H₂O	Orth. mmm (2/m 2/m 2/m) : Pnma
7.CB.55	Raisaite	CuMg[Te⁶⁺O₄(OH)₂] · 6H₂O	Mon. 2/m : B2/b
7.CB.57	Caichengyunite	Fe²⁺₃Al₂(SO₄)₆ · 30H₂O	Mon.
7.CB.60	Kornelite	Fe₂(SO₄)₃ · 7H₂O	Mon. 2/m : P2₁/m
7.CB.65	Quenstedtite	Fe₂(SO₄)₃ · 11H₂O	Tric. 1 : P1
7.CB.70	Lausenite	Fe₂(SO₄)₃ · 5H₂O	Mon. 2/m : P2₁/m
7.CB.75	Lishizhenite	ZnFe₂(SO₄)₄ · 14H₂O	Tric. 1 : P1
7.CB.75	Römerite	Fe²⁺Fe³⁺₂(SO₄)₄ · 14H₂O	Tric. 1 : P1
7.CB.80	Ransomite	CuFe₂(SO₄)₄ · 6H₂O	Mon. 2/m : P2₁/b
7.CB.85	Apjohnite	Mn²⁺Al₂(SO₄)₄ · 22H₂O	Mon. 2/m : P2₁/b
7.CB.85	Bílinite	Fe²⁺Fe³⁺₂(SO₄)₄ · 22H₂O	Mon. 2/m : P2₁/b
7.CB.85	Dietrichite	(Zn,Fe²⁺,Mn²⁺)Al₂(SO₄)₄ · 22H₂O	Mon. 2/m : P2₁/b
7.CB.85	Halotrichite	FeAl₂(SO₄)₄ · 22H₂O	Mon. 2 : P2
7.CB.85	Pickeringite	MgAl₂(SO₄)₄ · 22H₂O	Mon. 2/m : P2₁/b
7.CB.85	Redingtonite	(Fe²⁺,Mg,Ni)(Cr,Al)₂(SO₄)₄ · 22H₂O	Mon. 2
7.CB.85	Wupatkiite	(Co,Mg,Ni)Al₂(SO₄)₄ · 22H₂O	Mon. 2/m : P2₁/b
7.CB.90	Meridianiite	MgSO₄ · 11H₂O	Tric. 1 : P1

Fluorescence of CranswickiteHide

In UV light:

Not fluorescent

Other InformationHide

Notes:

Water soluble

Special Storage/
Display Requirements:

Cranswickite powder left exposed to a relative humidity of approximately 35% at 298 K in the laboratory hydrated to hexahydrite within two days.

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 CranswickiteHide

mindat.org URL:

https://www.mindat.org/min-40267.html
Please feel free to link to this page.

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External Links:

Look for Cranswickite on Webmineral

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Look for Cranswickite on Mineralien Atlas

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 CranswickiteHide

Reference List:

Zayakina, N.V., Lazebnik, K.A. (1999) [Tetrahydrate magnesium sulfate from western Yakutiya]. Zapiski Vserossijskogo Mineralogicheskogo Obshchestva, 128 (4) 99-101

Jambor, J.L., Grew, E.S., Roberts, A.C. (2000) New mineral names. American Mineralogist: 85: 1561–1565.

Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2010) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) CNMNC Newsletter No 4. Mineralogical Magazine, 74 (4) 797-800 doi:10.1180/s0026461x00038925

Peterson, R. C. (2011) Cranswickite MgSO₄·4H₂O, a new mineral from Calingasta, Argentina. American Mineralogist, 96 (5) 869-877 doi:10.2138/am.2011.3673

N.V., Zayakina, , (2019) Cranswickite — a rare tetrahydrate sulfate of magnesium MgSO4 ∙ 4H2O, the new find in Yakutia. Zapiski RMO (Proceedings of the Russian Mineralogical Society), 148 (1) 49-53 doi:10.30695/zrmo/2019.1481.04

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

Localities for CranswickiteHide

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.


Argentina (TL)
San Juan Province Calingasta Department ⓘ Calingasta (TL)	Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2010) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) CNMNC Newsletter No 4. Mineralogical Magazine, 74 (4) 797-800 doi:10.1180/s0026461x00038925 *Peterson, R. C. (2011) Cranswickite MgSO₄·4H₂O, a new mineral from Calingasta, Argentina. American Mineralogist, 96 (5) 869-877 doi:10.2138/am.2011.3673*
Sierra del Tontal ⓘ Sulfacor mines	*Peterson, R. C. (2011) Cranswickite MgSO₄·4H₂O, a new mineral from Calingasta, Argentina. American Mineralogist, 96 (5) 869-877 doi:10.2138/am.2011.3673*

Russia
Sakha ⓘ Malo-Tarynskoe deposit	N.V., Zayakina, , (2019) Cranswickite — a rare tetrahydrate sulfate of magnesium MgSO4 ∙ 4H2O, the new find in Yakutia. Zapiski RMO (Proceedings of the Russian Mineralogical Society), 148 (1) 49-53 doi:10.30695/zrmo/2019.1481.04

Cranswickite

About CranswickiteHide

Unique IdentifiersHide

IMA Classification of CranswickiteHide

Classification of CranswickiteHide

Mineral SymbolsHide

Physical Properties of CranswickiteHide

Chemistry of CranswickiteHide

Crystallography of CranswickiteHide

Crystal StructureHide

X-Ray Powder DiffractionHide

Geological EnvironmentHide

Type Occurrence of CranswickiteHide

Synonyms of CranswickiteHide

Related Minerals - Strunz-mindat GroupingHide

Fluorescence of CranswickiteHide

Other InformationHide

Internet Links for CranswickiteHide

References for CranswickiteHide

Localities for CranswickiteHide

Locality ListHide

Related Minerals - Strunz-mindat Grouping Hide