К минералам

RRUFF #4940

Almarudite

Элементы:KNaMnFeMgBeAlSiO
Valence:KNaMn^2+Fe^2+MgBeAlSiO

Химия

IMA chemistry:
K(☐,Na)2(Mn,Fe,Mg)2[(Be,Al)3Si12]O30
Valence chemistry:
K(☐,Na)2(Mn2+,Fe2+,Mg)2[(Be,Al)3Si12]O30

Классификация

Crystal systems:
hexagonal
Space groups:
P6, mcc
Structural group:
Milarite
IMA status:
Approved

Происхождение

Country:
Germany
Published:
2002
Oldest age Ma:
0.4
Paragenetic modes:
Abiotic, Secondary, Stage 4a: Earth's earliest continental crust, PM31 - Contact metamorphism

Примечания

Mihajlovic T, Lengauer C L, Ntaflos T, Kolitsch U, Tillmanns E (2004) Two new minerals, rondorfite, Ca8Mg[SiO4]4Cl2, and almarudite, K(☐,Na)2(Mn,Fe,Mg)2(Be,Al)3[Si12O30], and a study of iron-rich wadalite, Ca12[(Al8Si4Fe2)O32]Cl6, from the Bellerberg (Bellberg) volcano, Eifel, Germany. Neues Jahrbuch für Mineralogie, Abhandlungen 179, 265-294