Rudabányaite, a new mineral with a [Ag2Hg2]4+ cluster cation from the Rudabánya ore deposit (Hungary)

AbstractThe first occurrence of new mineral ardaite (a chlorine sulphosalt) has been discovered in the Madjarovo polymetallic ore deposit (Bulgaria). The average composition is Pb 56.50, Ag 0.04, Sb 22.48, S 15.56, Cl 3.78, total 98.36 wt.%. The formula is Pb20–18 Sb12–24S34–36.5Cl6–8. The mineral occurs as fine acicular aggregates associated with galena, nadorite, a Cl-bearing robinsonite and Cl-beating semseyite, pyrostilpnite, silver- bearing tetrahedrite and anglesite.

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Colusite from the Plavitsa gold deposit – a new mineral for the Republic of North Macedonia Gotse Zlatkov

Review of the Bulgarian Geological Society ◽

10.52215/rev.bgs.2021.82.3.37 ◽

2021 ◽

Vol 82 (3) ◽

pp. 37-39

Author(s):

Gotse Zlatkov

Keyword(s):

Gold Deposit ◽

New Mineral ◽

Micro Hardness ◽

Ore Deposit ◽

Sulphide Ore ◽

Icp Ms ◽

The Republic ◽

Ore Zones ◽

Gold Bearing

The Plavitsa ore deposit is a part of the Zletovo ore field. Two ore zones were established: primary (sulphide) and secondary (oxide, gold-bearing). The colusite occurs at the primary sulphide ore zone. The results of the microprobe analyses in wt%: Cu 47.38, V 3.41, Sn 8.28, As 10.75, Sb 2.01, Fe 0.11, S 29.1. LA-ICP-MS revealed contents of Te, Se, In, Ag, and Au. The micro-hardness (H) is 280–310 kg/mm2. At λ 540 and 580 nm R is 29% and 29.6%. The colusitе associates with enargite, famatinite, luzonite, bornite, barite, tennantite, tetrahedrite and tellurides of Au and Ag.

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Taneyamalite, (Na,Ca)(Mn2+,Mg,Fe3+,Al)12Si12 (O,OH)44, a new mineral from the Iwaizawa mine, Saitama Prefecture, Japan

Mineralogical Magazine ◽

10.1180/minmag.1981.44.333.06 ◽

1981 ◽

Vol 44 (333) ◽

pp. 51-53 ◽

Cited By ~ 1

Author(s):

Satoshi Matsubara

Keyword(s):

Empirical Formula ◽

Unit Cell ◽

Refractive Indices ◽

New Mineral ◽

Manganese Ore ◽

Ore Deposit ◽

X Ray ◽

Light Yellow ◽

Cell Data ◽

Unit Cell Data

AbstractTaneyamalite, (Na,Ca)(Mn2+,Mg,Fe3+,Al)12 Si12(O,OH)44, is a Mn2+-dominant analogue of howieite, and has been found in the metamorphosed bedded manganese ore deposit of the lwaizawa mine, Saitama Prefecture, Japan. It is triclinic, P1 or P, a 10.198(1), b 9.820(1), c 9.485(1) Å, α 90° 30(1)′, β 70° 32(1)′, γ 108° 34(1)′, Z = 1. The strongest X-ray powder diffractions are: 9.29(80)010, 7.99(35)10, 4.62(50)020, 3.65(40)120, 3.273(100)30, 3.081(50)11, 2.790(35)31, 2.630(28)023, 2.216(35)014, 43. Taneyamalite occurs in association with minor bannisterite as small seams in a caryopilite mass or as a fissure mineral cutting a hematite-quartz mass. It is greenish grey-yellow, lustre vitreous. Streak light yellow. Cleavage {010}, perfect. H. (Mohs) about 5. Calculated sp. gr. 3.30 (on unit cell data and normalized empirical formula), 3.25 (after the Gladstone-Dale Law using the revised data of Mandarino, 1976). It is optically biaxial negative, 2Vα about 70°. The refractive indices: α = 1.646(2), β = 1.664(2), γ = 1.676(2). Extinction is nearly parallel, sign of elongation positive. Pleochroism distinct: α = β nearly colourless, γ pale yellow. Absorption: α ≈ β < γ.

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Goryainovite, Ca2PO4Cl, a new mineral from the Stora Sahavaara iron ore deposit (Norrbotten, Sweden)

GFF ◽

10.1080/11035897.2016.1227363 ◽

2016 ◽

Vol 139 (1) ◽

pp. 75-82 ◽

Cited By ~ 1

Author(s):

Gregory Y. Ivanyuk ◽

Victor N. Yakovenchuk ◽

Yakov A. Pakhomovsky ◽

Taras L. Panikorovskii ◽

Nataliya G. Konoplyova ◽

...

Keyword(s):

Iron Ore ◽

New Mineral ◽

Ore Deposit ◽

Iron Ore Deposit

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FERDOWSIITE: A NEW MINERAL FROM THE BARIKA ORE DEPOSIT, IRAN

The Canadian Mineralogist ◽

10.3749/canmin.51.5.727 ◽

2013 ◽

Vol 51 (5) ◽

pp. 727-734 ◽

Cited By ~ 3

Author(s):

Emil Makovicky ◽

Dan Topa ◽

Husein Tajeddin ◽

Hubert Putz ◽

Georg Zagler

Keyword(s):

New Mineral ◽

Ore Deposit

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TEM/AEM characterization of fine-grained clay minerals in very-low-grade rocks: Evaluation of contamination by empa involving celadonite family minerals

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100165938 ◽

1996 ◽

Vol 54 ◽

pp. 694-695

Author(s):

Gejing Li ◽

D. R. Peacor ◽

D. S. Coombs ◽

Y. Kawachi

Keyword(s):

Electron Microscopy ◽

Volcanic Rocks ◽

Analytical Electron Microscopy ◽

Metamorphic Rocks ◽

New Mineral ◽

Chemical Compositions ◽

Low Grade ◽

Fine Grained ◽

Depth Analysis ◽

Mineral Aggregates

Recent advances in transmission electron microscopy (TEM) and analytical electron microscopy (AEM) have led to many new insights into the structural and chemical characteristics of very finegrained, optically homogeneous mineral aggregates in sedimentary and very low-grade metamorphic rocks. Chemical compositions obtained by electron microprobe analysis (EMPA) on such materials have been shown by TEM/AEM to result from beam overlap on contaminant phases on a scale below resolution of EMPA, which in turn can lead to errors in interpretation and determination of formation conditions. Here we present an in-depth analysis of the relation between AEM and EMPA data, which leads also to the definition of new mineral phases, and demonstrate the resolution power of AEM relative to EMPA in investigations of very fine-grained mineral aggregates in sedimentary and very low-grade metamorphic rocks.Celadonite, having end-member composition KMgFe3+Si4O10(OH)2, and with minor substitution of Fe2+ for Mg and Al for Fe3+ on octahedral sites, is a fine-grained mica widespread in volcanic rocks and volcaniclastic sediments which have undergone low-temperature alteration in the oceanic crust and in burial metamorphic sequences.

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