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Ransomite

A valid IMA mineral species - grandfathered

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Photos of Ransomite (4)

Ransomite Gallery Search Photos of Ransomite

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Ransomite

United Verde Mine, Jerome, Verde Mining District, Black Hills, Yavapai County, Arizona, USA

Ransomite

United Verde Mine, Jerome, Verde Mining District, Black Hills, Yavapai County, Arizona, USA

Ransomite

United Verde Mine, Jerome, Verde Mining District, Black Hills, Yavapai County, Arizona, USA

Ransomite

United Verde Mine, Jerome, Verde Mining District, Black Hills, Yavapai County, Arizona, USA

Ransomite

United Verde Mine, Jerome, Verde Mining District, Black Hills, Yavapai County, Arizona, USA

Ransomite

United Verde Mine, Jerome, Verde Mining District, Black Hills, Yavapai County, Arizona, USA

Ransomite

United Verde Mine, Jerome, Verde Mining District, Black Hills, Yavapai County, Arizona, USA

Ransomite

United Verde Mine, Jerome, Verde Mining District, Black Hills, Yavapai County, Arizona, USA

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About RansomiteHide

Frederick Leslie Ransome

Formula:

CuFe₂(SO₄)₄ · 6H₂O

Colour:

Bright sky-blue; pale blue in transmitted light

Lustre:

Vitreous, Pearly

Hardness:

2½

Specific Gravity:

2.632

Crystal System:

Monoclinic

Name:

Named by Carl B. Lausen in 1928 in honor of Frederick Leslie Ransome (December 2, 1868 Greenwich, England, UK - October 6, 1935 Pasadena, California, USA), Professor of Economic Geology at the California Institute of Technology. Earlier, he worked at the University of Arizona and the United States Geological Survey.

Type Locality:

ⓘ United Verde Mine (The Big Hole; Big Hole property; Hull Mine; Hopewell tunnel; Patented claim 3480; Patented claim 2812; Patented claims 3348), Jerome, Verde Mining District, Black Hills (Black Hill Range), Yavapai County, Arizona, USA

This page provides mineralogical data about Ransomite.

Unique IdentifiersHide

Mindat ID:

3364

Long-form identifier:

mindat:1:1:3364:6

GUID
(UUID V4):

b8ff6a76-f53e-4a65-9374-36c713807c0b

IMA Classification of RansomiteHide

IMA status:

Approved, 'Grandfathered' (first described prior to 1959)

IMA Formula:

CuFe³⁺₂(SO₄)₄ · 6H₂O

First published:

1928

Type description reference:

Lausen, C. (1928) Hydrous sulphates formed under fumerolic conditions at the United Verde Mine. American Mineralogist: 13(6): 203-229.

Classification of RansomiteHide

Strunz-mindat (2024):

7.CB.80

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.:

29.7.1.1

29 : HYDRATED ACID AND NORMAL SULFATES
7 : AB₂(XO₄)₄·H₂O

Hey's CIM Ref.:

25.2.24

25 : Sulphates
2 : Sulphates of Cu and Ag

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

Pronunciation of RansomiteHide

Pronunciation:

Play	Recorded by	Country
	Jolyon Ralph	United Kingdom

Physical Properties of RansomiteHide

Lustre:

Vitreous, Pearly

Transparency:

Transparent

Comment:

Pearly on cleavages

Colour:

Bright sky-blue; pale blue in transmitted light

Hardness:

2½ on Mohs scale

Cleavage:

Perfect
Perfect on {001}

Density:

2.632 g/cm³ (Measured) 2.735 g/cm³ (Calculated)

Optical Data of RansomiteHide

Type:

Biaxial (+)

RI values:

n_α = 1.631(5) n_β = 1.643(5) n_γ = 1.695(5)

Max Birefringence:

δ = 0.064

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.

Surface Relief:

Moderate

Dispersion:

r < v strong

Chemistry of RansomiteHide

Mindat Formula:

CuFe₂(SO₄)₄ · 6H₂O

Elements listed:

Cu, Fe, H, O, S - search for minerals with similar chemistry

Common Impurities:

Crystallography of RansomiteHide

Crystal System:

Monoclinic

Class (H-M):

2/m - Prismatic

Space Group:

P2₁/b

Cell Parameters:

a = 4.811(2) Å, b = 16.217(4) Å, c = 10.403(2) Å
β = 93.01(2)°

Ratio:

a:b:c = 0.297 : 1 : 0.641

Unit Cell V:

810.52 Å³ (Calculated from Unit Cell)

Morphology:

Slender prisms elongated parallel to the c axis. Rich in forms including: {110} (dominant), {111}, {211}, {311}, {301}, {053}, {010}, {110}, {210}.

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)
0000203	Ransomite	Wood M M (1970) The crystal structure of ransomite American Mineralogist 55 729-734		1970	United Verde mine, Jerome, Arizona, USA	0	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Ransomite'
loop_
_publ_author_name
'Wood M M'
_journal_name_full 'American Mineralogist'
_journal_volume 55 
_journal_year 1970
_journal_page_first 729
_journal_page_last 734
_publ_section_title
;
 The crystal structure of ransomite
;
_database_code_amcsd 0000203
_chemical_compound_source 'United Verde mine, Jerome, Arizona, USA'
_chemical_formula_sum 'Cu Fe2 S4 O22 H12'
_cell_length_a 4.811
_cell_length_b 16.217
_cell_length_c 10.403
_cell_angle_alpha 90
_cell_angle_beta 93.02
_cell_angle_gamma 90
_cell_volume 810.515
_exptl_crystal_density_diffrn      2.735
_symmetry_space_group_name_H-M 'P 1 21/c 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,1/2-y,1/2+z'
  '-x,1/2+y,1/2-z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
Cu   0.00000   0.00000   0.00000   0.01684
Fe   0.73770   0.62720   0.02230   0.01026
S1   0.79060   0.28690   0.13990   0.01039
S2   0.25020   0.52980   0.17040   0.00760
O1   0.03090   0.21440   0.55490   0.01988
O2   0.58800   0.14700   0.59270   0.02052
O3   0.66870   0.29220   0.63220   0.02951
O4   0.89270   0.19060   0.77130   0.02596
O5   0.14270   0.45540   0.09990   0.01570
O6   0.07050   0.59990   0.14050   0.01583
O7   0.53400   0.54740   0.12670   0.01482
O8   0.27170   0.51280   0.30980   0.02001
Wat1   0.71500   0.06610   0.90720   0.01621
Wat2   0.35080   0.28140   0.85700   0.01494
Wat3   0.19370   0.10650   0.04830   0.03040

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
- Å	()

Comments:

No published XRD data.

Geological EnvironmentHide

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
Stage 7: Great Oxidation Event	<2.4
47a : [Near-surface hydration of prior minerals]
47b : [Sulfates and sulfites]
Stage 10b: Anthropogenic minerals	<10 Ka
55 : Anthropogenic mine minerals

Type Occurrence of RansomiteHide

Type Locality:

General Appearance of Type Material:

Crusts and radiating tufts.

Place of Conservation of Type Material:

The Natural History Museum, London, England, number 1985,401.
Mineral Museum, University of Arizona, USA, number M50.
Harvard University, Cambridge, Massachusetts, USA, number 90541.
National Museum of Natural History, Washington, D.C., USA, number 95955.

Geological Setting of Type Material:

Burning pyritic ore body.

Associated Minerals at Type Locality:

Guildite

Coquimbite

Reference:

Lausen, C. (1928) Hydrous sulphates formed under fumerolic conditions at the United Verde Mine. American Mineralogist: 13(6): 203-229.

Download:

https://rruff.info/rruff_1.0/uploads/AM13_203.pdf

Other Language Names for RansomiteHide

German:Ransomit

Russian:Рансомит

Spanish:Ransomita

Common AssociatesHide

Associated Minerals Based on Photo Data:

1 photo of Ransomite associated with Magnesiocopiapite	MgFe³⁺₄(SO₄)₆(OH)₂ · 20H₂O
1 photo of Ransomite associated with Guildite	CuFe³⁺(SO₄)₂(OH) · 4H₂O

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.15	Cranswickite	MgSO₄ · 4H₂O	Mon. m : Bb
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.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

Other InformationHide

Notes:

Soluble in water.

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 RansomiteHide

mindat.org URL:

https://www.mindat.org/min-3364.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 RansomiteHide

Reference List:

Lausen, C. (1928) Hydrous sulphates formed under fumerolic conditions at the United Verde Mine. American Mineralogist: 13(6): 203-229.

Palache, Charles, Berman, Harry, Frondel, Clifford (1951) The System of Mineralogy (7th ed.) Vol. 2 - Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Ect. John Wiley and Sons, New York.pp.519-520

Wood, M.M. (1970) The crystal structure of ransomite. American Mineralogist: 55: 729-734.

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

Localities for RansomiteHide

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.


Greece
Attica East Attica Lavreotiki Lavrion mining district Plaka Plaka Mines ⓘ Plaka Sulfate Locality
ⓘ Plaka Sulfate Locality II	Branko Rieck collection

Italy
Tuscany Grosseto Province Massa Marittima ⓘ Fenice Capanne Mine	Gunnar Farber December 2021 mineral list

USA
Arizona Cochise County ⓘ Bisbee	Graeme (1981)
ⓘ Campbell Mine	Anthony et al. (1995)
ⓘ Cole Mine (Cole shaft; Cole No. 3)	Anthony et al. (1995)
Yavapai County Black Hills (Black Hill Range) Verde Mining District Jerome ⓘ United Verde Mine (The Big Hole; Big Hole property; Hull Mine; Hopewell tunnel; Patented claim 3480; Patented claim 2812; Patented claims 3348) (TL)	Lausen (1928) +4 other references

Ransomite

About RansomiteHide

Unique IdentifiersHide

IMA Classification of RansomiteHide

Classification of RansomiteHide

Mineral SymbolsHide

Pronunciation of RansomiteHide

Physical Properties of RansomiteHide

Optical Data of RansomiteHide

Chemistry of RansomiteHide

Crystallography of RansomiteHide

Crystal StructureHide

X-Ray Powder DiffractionHide

Geological EnvironmentHide

Type Occurrence of RansomiteHide

Other Language Names for RansomiteHide

Common AssociatesHide

Related Minerals - Strunz-mindat GroupingHide

Other InformationHide

Internet Links for RansomiteHide

References for RansomiteHide

Localities for RansomiteHide

Locality ListHide

Related Minerals - Strunz-mindat Grouping Hide