scholarly journals I.—Chapters on the Mineralogy of Scotland. Chapter Fifth.—The Micas; with description of Haughtonite, a new Mineral Species

1880 ◽  
Vol 29 (1) ◽  
pp. 1-46 ◽  
Author(s):  
Heddle
Keyword(s):  
Optical Properties ◽  
Special Interest ◽  
Mineral Species ◽  
New Mineral ◽  
New Mineral Species ◽  
Great Vein ◽  
Characteristic Colour

Muscovite is so easily recognised by its optical properties that the only cases which seemed to me to call for analysis were those which, from being possessed of characteristic colour, were of special interest. Of these the most singular is a variety found rarely in the great vein of Ben Capval, Harris; it occurs in crystals of a peculiar green tint, the crystals are small and have somewhat of a pearly lustre.

Arsenian nagyagite from Sacarimb, Romania: a possible new mineral species

1994 ◽  
Vol 58 (392) ◽  
pp. 473-478 ◽  
Author(s):  
G. Simon ◽  
D. H. M. Alderton ◽  
T. Bleser
Keyword(s):  
Optical Properties ◽  
Mineral Species ◽  
New Mineral ◽  
Chemical Analyses ◽  
New Mineral Species ◽  
Rapid Changes ◽  
Western Romania

AbstractArsenic-rich nagyagite (up to 5.5 wt % As) has been discovered in samples from the Au-Ag-Te deposit of Sacarimb, western Romania. Optical properties of the mineral show small but distinct differences to nagyagite (ss). Chemical analyses indicate a substitution of As for Sb, and chemical zonation suggests rapid changes in the chemistry of the mineralising fluids.

Mozartite, CaMn(OH)SiO 4 , a new mineral species from the Cerchiara Mine, northern Apennines, Italy

1993 ◽  
Vol 31 (2) ◽  
pp. 331-336 ◽  
Author(s):  
R. Brasso ◽  
G. Lucchetti ◽  
L. Zefiro ◽  
A. Palenzona
Keyword(s):  
Northern Apennines ◽  
Mineral Species ◽  
New Mineral ◽  
New Mineral Species

Coiraite, (Pb,Sn2+)12.5As3Fe2+Sn4+5 S28: a franckeite-type new mineral species from Jujuy Province, NW Argentina

2008 ◽  
Vol 72 (5) ◽  
pp. 1083-1101 ◽  
Author(s):  
W. H. Paar ◽  
Y. Moëlo ◽  
N. N. Mozgova ◽  
N. I. Organova ◽  
C. J. Stanley ◽  
...  
Keyword(s):  
Low Temperature ◽  
Microprobe Analysis ◽  
Electron Microprobe Analysis ◽  
Mineral Species ◽  
New Mineral ◽  
Hydrothermal Solutions ◽  
X Ray ◽  
New Mineral Species ◽  
Primary Mineral ◽  
The Ideal

AbstractCoiraite, ideally (Pb,Sn2+)12.5As3Fe2+Sn4+S28, occurs as an economically important tin ore in the large Ag-Sn-Zn polymetallic Pirquitas deposit, Jujuy Province, NW-Argentina. The new mineral species is the As derivative of franckeite and belongs to the cylindrite group of complex Pb sulphosalts with incommensurate composite-layered structures. It is a primary mineral, frequently found in colloform textures, and formed from hydrothermal solutions at low temperature. Associated minerals are franckeite, cylindrite, pyrite-marcasite, as well as minor amounts of hocartite, Ag-rich rhodostannite. arsenopyrite and galena. Laminae of coiraite consist of extremely thin bent platy crystals up to 50 urn long. Electron microprobe analysis (n = 31) gave an empirical formula Pb11.21As2.99Ag0.13Fe1.10Sn6.13S28.0 close to the ideal formula (Pb11.3Sn2+1.2)Σ=12.5As3Fe2+Sn4+S28. Coiraite has two monoclinic sub-cells, Q (pseudotetragonal) and H (pseudohexagonal). Q: a 5.84(1) Å, b 5.86(1) Å, c 17.32(1) Å, β 94.14(1)°, F 590.05(3) Å3, Z = 4, a:b:c = 0.997:1:2.955; H (orthogonal setting): a 6.28(1) Å, b 3.66(1) Å, c 17.33(1) Å, β 91.46(1)°, V398.01(6) Å3, Z = 2, a∶b∶c = 1.716∶1∶4.735. The strongest Debye-Scherrer camera X-ray powder-diffraction lines [d in Å, (I), (hkl)] are: 5.78, (20), (Q and H 003); 4.34, (40), (Q 004); 3.46, (30), (Q and H 005); 3.339, (20), (Q 104); 2.876, (100), (Q and H 006); 2.068, (60), (Q 220).

Taaffeite, a new beryllium mineral, found as a cut gemstone

1951 ◽  
Vol 29 (215) ◽  
pp. 765-772 ◽  
Author(s):  
B. W. Anderson ◽  
C. J. Payne ◽  
G. F. Claringbull
Keyword(s):  
Mineral Species ◽  
New Mineral ◽  
Double Refraction ◽  
New Mineral Species

In October 1945 Count Taaffe, a brilliant if unorthodox Dublin gemmologist, in the course of examining a motley collection of gemstones, came across a small mauve stone which puzzled him greatly. The stone had the appearance, and most of thc characters, of spinel, but afforded clear evidence of double refraction. As recounted below, this stone was later found to belong to an entirely new mineral species-—the only case hitherto known where a mineral has been first encountered as a faceted gem.

Yangite, PbMnSi3O8·H2O, a new mineral species with double wollastonite silicate chains, from the Kombat mine, Namibia

2016 ◽  
Vol 101 (11) ◽  
pp. 2539-2543 ◽  
Author(s):  
Robert T. Downs ◽  
William W. Pinch ◽  
Richard M. Thompson ◽  
Stanley H. Evans ◽  
Lauren Megaw
Keyword(s):  
Mineral Species ◽  
New Mineral ◽  
New Mineral Species

scholarly journals Barium minerals – baritе and chlorinedominant ferrokinoshitalite bafe2+3[cl2/al2si2o10] in plagioperidotites Yoko-Dovyren intrusion (Northern Baikal region) – products of epigenetic low grad metamorphism

2019 ◽  
Vol 64 (11) ◽  
pp. 1196-1205
Author(s):  
E. M. Spiridonov
Keyword(s):  
Baikal Region ◽  
Potassium Chlorate ◽  
Mineral Species ◽  
New Mineral ◽  
New Mineral Species

In the plagioperidotite of the ultamafite-mafic Yoko-Dovyren intrusion captured by low-grad metamorphism (NGM) under conditions of the prenite-pumpelliite facies (PPF), mobilization of Ba, Cl and Sr is observed The content of barium in plagioperidotite ranges from 36 to 313 (an average of 130 g / t); strontium from 25 to 169 (an average of 86 g / t); Ba / Sr value varies from 0.5 to 4 (on average 1.5). Barium minerals phlogopite and plagioclase; chlorine chloroferrisadanagite from inclusions in alumochromite, late-magmatic phlogopite, potassium chlorate ferropargassite and chlorapatite in the margins of sulphide nests. During the NGM processes, these minerals were replaced by chlorites, tremolite, diopside, which included very little Ba and Cl. In the areas of barium minerals development, plagioperidotites contain 348518 g/t of barium and 46 g/t of strontium, which indicates the redistribution of Ba and the removal of Sr. Metamorphogenic barium minerals non-strontium barite and Ba-Fe-Cl mica chloro-dominant ferrokinochitalit. They coexist with the minerals of the rodingite association hydrogarnet, tremolite, diopside, chlorite, antigorite, magnetite, hydroxylapatite. Ferrokosnoshitalit replaces phlogopite, plagioclase, sulfides, contains up to 21 wt. % BaO, 31% FeO, 11% Cl and has a iron index of f = 75.890.5. The composition of the most chlorine-rich individual responds (Ba0.83K0.16)0.99(Fe2+2.63Mg0.28Fe3+0.04Al0.02Cr0.01Mn0.01)3[(Cl1.86OH0.12S0.02)2/Al1.86Si2.14O10]. Since Yoko-Dovyrenskiy ferrokynosalital is chlordominant, this is a new mineral species.

OSAKAITE, Zn4SO4(OH)6{middle dot}5H2O, A NEW MINERAL SPECIES FROM THE HIRAO MINE, OSAKA, JAPAN

2007 ◽  
Vol 45 (6) ◽  
pp. 1511-1517 ◽  
Author(s):  
M. Ohnishi ◽  
I. Kusachi ◽  
S. Kobayashi
Keyword(s):  
Mineral Species ◽  
New Mineral ◽  
New Mineral Species
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