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Marumoite

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Formula:
Pb8As10S23
System:
Monoclinic
Colour:
Lead grey
Lustre:
Metallic
Name:
Named in honour of Fumiyuki MARUMO (b. 1931), professor of mineralogy and crystallography at Nihon University, Tokyo, Japan, a specialist of the structures of sulphosalts.
May belong to the Sartorite Group.


Classification of Marumoite

Approved
Approval Year:
1998
2.HC.05g

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
H : Sulfosalts of SnS archetype
C : With only Pb
Dana 7th ed.:
3.7.8.4

Physical Properties of Marumoite

Metallic
Diaphaneity (Transparency):
Opaque
Colour:
Lead grey

Chemical Properties of Marumoite

IMA Formula:
Pb8As10S23
Elements listed in formula:

Crystallography of Marumoite

Crystal System:
Monoclinic
Class (H-M):
2 - Sphenoidal
Space Group:
P21
Cell Parameters:
a = 8.368 Å, b = 115.75 Å, c = 7.903 Å
β = 90.11°
Ratio:
a:b:c = 0.072 : 1 : 0.068
Unit Cell Volume:
V 7654.8 ų
X-Ray Powder Diffraction Data:
d-spacingIntensity
2.978 (100)
3.663 (70)
2.339 (65)
2.735 (60)
2.713 (50)
2.872 (48)
3.216 (48)

Type Occurrence of Marumoite

Relationship of Marumoite to other Species

2.HC.05bArgentobaumhaueriteAg1.5Pb22As33.5S72
2.HC.05bBaumhaueritePb12As16S36
2.HC.05eChabournéiteTl4Pb2(Sb,As)20S34
2.HC.05dDufrénoysitePb2As2S5
2.HC.05aGuettarditePbSbAsS4
2.HC.05cLiveingitePb18.5As25S56
2.HC.05fParapierrotiteTlSb5S8
2.HC.05fPierrotiteTlSb3As2S8
2.HC.05dRathiteAg2Pb12-xTlx/2As18+x/2S40
2.HC.05aSartoritePbAs2S4
2.HC.05aTwinnitePbSb2S4
2.HC.05dVeenitePb2(Sb,As)2S5
2.HC.05eDalnegroiteTl4Pb2(As,Sb)20S34
2.HC.10aFülöppitePb3Sb8S15
2.HC.10cHeteromorphitePb7Sb8S19
2.HC.10bPlagionitePb5Sb8S17
2.HC.10dRayite(Ag,Tl)2Pb8Sb8S21
2.HC.10dSemseyitePb9Sb8S21
2.HC.15BoulangeritePb5Sb4S11
2.HC.15FalkmanitePb3Sb2S6
2.HC.20RobinsonitePb4Sb6S13
2.HC.25MoëloitePb6Sb6S17
2.HC.30DadsonitePb23Sb25S60Cl
2.HC.35OwyheeiteAg3Pb10Sb11S28
2.HC.35ZoubekiteAgPb4Sb4S10
2.HC.40ParasterryiteAg4Pb20Sb14As10S58

Other Names for Marumoite

Name in Other Languages:

Other Information

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

References for Marumoite

Reference List:
OZAWA, T. & TAKEUCHI, Y. (1983): A new Pb-As sulfosalt having a long periodicity from Lengenbach. Mineralogical Society of Japan Annual Meeting 1983, D4 (abstract) .

Le Règne Minéral, 30 (1999) 33-41.

Shimizu M., Ishizaki Y., Honma T., Matsubara S., Miyawaki R. (2005): Mineral Deposit Research: Meeting the Global Challenge, 1, 695-697.

Shimizu, M., Ishizaki, Y., Honma, T., Matsubara, S., Miyawaki, R. (2005): Dufrenoysite and marumoite from the Okoppe Mine, Japan. 8th Biennal SGA Meeting, Beijing, August 18-21, 2005, Poster #100.

Internet Links for Marumoite

mindat.org URL:
https://www.mindat.org/min-26404.html
Please feel free to link to this page.

Localities for Marumoite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Japan
 
  • Honshu Island
    • Tohoku Region
      • Aomori Prefecture
        • Shimokita peninsula
Shimizu, M., Ishizaki, Y., Honma, T., Matsubara, S., Miyawaki, R. (2005): Dufrenoysite and marumoite from the Okoppe Mine, Japan. 8th Biennal SGA Meeting, Beijing, August 18-21, 2005, Poster #100.
Switzerland (TL)
 
  • Wallis (Valais)
    • Binn Valley
      • Fäld (Imfeld; Im Feld; Feld)
Le Règne Minéral, (30), 33-41
Mineral and/or Locality  
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