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Botryogen

A valid IMA mineral species - grandfathered
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About BotryogenHide

Formula:
MgFe3+(SO4)2(OH) · 7H2O
Colour:
Light to dark orange-red; pale to dark orange
Lustre:
Vitreous
Hardness:
2 - 2½
Specific Gravity:
2.14
Crystal System:
Monoclinic
Name:
From the Greek βότρυς = "bunch of grapes" and γεννάν = "to bear", in allusion to the appearance of the original botryoidal and stalactitic masses found at Falun, Sweden.
Chemically similar to magnesiocopiapite, mountkeithite, and slavíkite.

Crystal structure details (Majzlan et al., 2016): (1) 2 Fe sites; (2) Fe(SO4)2(OH)(H2O)2 chains cross-linked by Mgϕ6 polyhedra (ϕ - unspecified ligand); (3) three transformer water groups with [3]O and two non-transformer with [4]O.


Unique IdentifiersHide

Mindat ID:
733
Long-form identifier:
mindat:1:1:733:7
GUID
(UUID V4):
8b4474b1-5539-4ebf-b009-3153a9fcb43e

IMA Classification of BotryogenHide

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

Classification of BotryogenHide

7.DC.25

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
C : With only medium-sized cations; chains of edge-sharing octahedra
31.9.6.1

31 : HYDRATED SULFATES CONTAINING HYDROXYL OR HALOGEN
9 : (AB)(XO4)Zq·xH2O
25.11.19

25 : Sulphates
11 : Sulphates of Fe and other metals

Mineral SymbolsHide

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

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

Physical Properties of BotryogenHide

Vitreous
Transparency:
Transparent, Translucent
Colour:
Light to dark orange-red; pale to dark orange
Streak:
Ocher-yellow
Hardness:
2 - 2½ on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
On {010}, perfect; on {110}, good.
Fracture:
Irregular/Uneven, Conchoidal
Density:
2.14 g/cm3 (Measured)    2.23 g/cm3 (Calculated)

Optical Data of BotryogenHide

Type:
Biaxial (+)
RI values:
nα = 1.522 nβ = 1.529 nγ = 1.577
2V:
Measured: 41° , Calculated: 44°
Max Birefringence:
δ = 0.055
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Low
Dispersion:
none
Optical Extinction:
X = b; Z ∧ c = 12°.
Pleochroism:
Visible
Comments:
X = Colourless to light brown; Y = Cinnamon-brown; Z = Golden yellow

Chemistry of BotryogenHide

Mindat Formula:
MgFe3+(SO4)2(OH) · 7H2O
Common Impurities:
Zn,Mn

Crystallography of BotryogenHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 10.49(2) Å, b = 17.84(1) Å, c = 7.12(2) Å
β = 100.16(17)°
Ratio:
a:b:c = 0.588 : 1 : 0.399
Unit Cell V:
1,311.55 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Crystals prismatic [001]; smaller crystals commonly long prismatic; large crystals short prismatic with {101} large and often striated [100]. The vertical zone is striated [001]. Reniform, botryoidal, or globular aggregates with a radiating structure and crystalline surfaces.
Comment:
Space group setting is P21/n

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0014694BotryogenSuesse P (1967) Die kristallstruktur des botryogens Naturwissenschaften 54 139-1391967Quetena, Chile0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
8.87 Å(FFF)
2.998 Å(F)
6.29 Å(mF)
5.11 Å(mF)
5.47 Å(f)
3.86 Å(f)
3.41 Å(f)
Comments:
Quetena, Chile. Data from Cesbron (1964).

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 7: Great Oxidation Event<2.4
47a : [Near-surface hydration of prior minerals]
47b : [Sulfates and sulfites]

Type Occurrence of BotryogenHide

Place of Conservation of Type Material:
Natural History Museum, London, United Kingdom, number BM 1956,315 (holotype).
Natural History Museum, Wien, Austria, number A.a.185 (type?).

Synonyms of BotryogenHide

Other Language Names for BotryogenHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
45 photos of Botryogen associated with CopiapiteFe2+Fe3+4(SO4)6(OH)2 · 20H2O
32 photos of Botryogen associated with HalotrichiteFeAl2(SO4)4 · 22H2O
18 photos of Botryogen associated with ParabutleriteFe3+(SO4)(OH) · 2H2O
8 photos of Botryogen associated with PickeringiteMgAl2(SO4)4 · 22H2O
6 photos of Botryogen associated with ButleriteFe3+(SO4)(OH) · 2H2O
5 photos of Botryogen associated with Halotrichite-Pickeringite Series
3 photos of Botryogen associated with Redingtonite(Fe2+,Mg,Ni)(Cr,Al)2(SO4)4 · 22H2O
3 photos of Botryogen associated with ChalcanthiteCuSO4 · 5H2O
2 photos of Botryogen associated with SeleniteCaSO4 · 2H2O
2 photos of Botryogen associated with KnoxvilliteMgFe3+4(SO4)6(OH)2 · 20H2O

Related Minerals - Strunz-mindat GroupingHide

7.DC.05AluminiteAl2(SO4)(OH)4 · 7H2OMon. 2/m : P21/b
7.DC.05Meta-aluminiteAl2(SO4)(OH)4 · 5H2OMon. 2/m
7.DC.10ButleriteFe3+(SO4)(OH) · 2H2OMon. 2/m : P21/m
7.DC.10ParabutleriteFe3+(SO4)(OH) · 2H2OOrth. mmm (2/m 2/m 2/m)
7.DC.15FibroferriteFe3+(SO4)(OH) · 5H2OTrig. 3 : R3
7.DC.20XitieshaniteFe3+(SO4)Cl · 6H2OMon. 2/m : P21/b
7.DC.25Zincobotryogen(Zn,Mg,Mn2+)Fe3+(SO4)2(OH) · 7H2OMon. 2/m
7.DC.30ChaidamuiteZnFe3+(SO4)2(OH) · 4H2OTric. 1 : P1
7.DC.30GuilditeCuFe3+(SO4)2(OH) · 4H2OMon. 2/m : P21/m
7.DC.40PauladamsiteCu4(SeO3)(SO4)(OH)4 · 2H2OTric. 1 : P1
7.DC.45RiotintoiteAl(SO4)(OH) · 3H2OTric. 1 : P1
7.DC.50ThorneitePb6(Te6+2O10)(CO3)Cl2(H2O)Mon. 2/m : B2/b
7.DC.55VendidaiteAl2(SO4)(OH)3Cl · 6H2OMon. 2/m : B2/b

Other InformationHide

Notes:
Partially soluble in boiling water, rendering an ocherous residue. Soluble in 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 BotryogenHide

References for BotryogenHide

Reference List:

Localities for BotryogenHide

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
 
  • San Juan Province
    • Calingasta Department
      • Calingasta
        • Quebrada Alcaparrosa
Australia
 
  • Queensland
    • City of Mount Isa
Austria
 
  • Salzburg
    • Zell am See District
      • Bramberg am Wildkogel
        • Mühlbach im Pinzgau
  • Tyrol
    • Lienz District
      • Heinfels
Brazil
 
  • Minas Gerais
    • Catas Altas
Chile
 
  • Antofagasta
    • Antofagasta Province
      • Mejillones
        • Mejillones peninsula
      • Sierra Gorda
    • El Loa Province
      • Calama
        • Chuquicamata District
          • Toki Cu deposit (Toki Cluster)
    • Tocopilla Province
  • Arica y Parinacota
    • Arica Province
      • Los Camarones valley
  • Tarapacá
    • Tamarugal Province
China
 
  • Gansu
    • Baiyin
      • Baiyin District
        • Baiyinchang ore field
          • Baiyinchang Cu deposit
  • Qinghai
    • Haixi Mongol and Tibetan Autonomous Prefecture
      • Da Qaidam (Dachaidan Co.)
        • Xitieshan
France
 
  • Grand Est
    • Bas-Rhin
      • Sélestat-Erstein
        • Lalaye
Germany
 
  • Lower Saxony
    • Goslar District
      • Goslar
        • Rammelsberg
  • Thuringia
    • Greiz District
      • Ronneburg
Greece
 
  • Attica
    • East Attica
      • Lavreotiki
        • Lavrion Mining District
          • Agios Konstantinos (Kamariza)
            • Kamariza Mines (Kamareza Mines)
Hungary
 
  • Borsod-Abaúj-Zemplén County
    • Kazincbarcika District
      • Rudabánya
  • Heves County
    • Gyöngyös District
      • Gyöngyösoroszi
  • Nógrád County
Iran
 
  • Hormozgan Province
    • Hajjiabad County
      • Hajjiabad
Italy
 
  • Liguria
    • Genoa
      • Sestri Levante
  • Piedmont
    • Metropolitan City of Turin
      • Chialamberto
  • Tuscany
    • Grosseto Province
      • Massa Marittima
    • Livorno Province
      • Capoliveri
        • Cape Calamita Mine
      • Porto Azzurro
Japan
 
  • Ehime Prefecture
    • Kita District
Jordan
 
  • Jerash Governorate
    • Jerash
Pakistan
 
  • Khyber Pakhtunkhwa Province
    • Nowshera District
      • Jehangira
Niazi, Shaheer (2023) Personal Communication. Identified by Shaheer Niazi: Visual Identification, Inferred (explain how), Wet Chemical
Peru
 
  • Ica
    • Nazca Province
      • Marcona District
Slovakia
 
  • Košice Region
    • Gelnica District
Spain
 
  • Andalusia
    • Huelva
      • Minas de Riotinto
        • Rio Tinto Mines
Sweden
 
  • Dalarna County
Ukraine
 
  • Sevastopol
    • Balaklava district
USA
 
  • Arizona
    • Cochise County
    • Mohave County
      • Hualapai Mountains
        • Hualapai Mining District
          • Pine Peak
  • California
    • Inyo County
      • Coso Hot Springs
    • Merced County
      • Stayton Mining District (McLeod Mining District; Panoche Mining District)
        • Antimony Peak
    • Napa County
      • Calistoga
        • The Palisades [range]
      • Knoxville Mining District
        • Knoxville
    • San Bernardino County
      • Calico Mts (Calico Hills)
        • Calico District (Daggett District; Calico-Daggett area)
          • Calico
  • Nevada
    • Nye County
      • Hot Creek Range
        • Morey Mining District
          • Morey Mine
  • Ohio
    • Franklin County
      • Columbus
    • Huron County
      • Monroeville
        • West Branch Huron River
    • Meigs County
      • Langsville
  • Pennsylvania
    • Lebanon County
      • Cornwall Borough (Cornwall)
  • Tennessee
    • Sevier County
 
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