| Home Page | Log In | Message Board | The Mindat Directory |
| Register | Search Pages | Chat Now! (2 online) | Mindat Auctions |
|
|
|
Bismuth : Bi, Plumbomicrolite : (Pb,Ca,U)2-x(Ta,Nb,Sn)2O6(O,[]) | |
|
Ploskaya Mt, Western Keivy Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia size:bismuthX is 7mm plumbomicrolite is matrix ! Paul Bongaerts specimen and photograph |
| © Paul Bongaerts | Photo ID: 24744 View Count: 387 |
Caysichite-(Y) : Ca2Y2Si4O10(CO3)3·4H2O, Fluorite (Var: Yttrofluorite) : (Ca1-xYx)F2+x where 0.05< x <0.3 | |
|
Ploskaya Mt, Western Keivy Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia Brownish inclusions of caysichite-(Y) with white tengerite-(Y) rims into yttrofluorite of the first generation. Associated minerals are quartz, green amazonite and minor reddish-brown monazite-(Ce). FOV is ~1.5x1.2 cm. Selfcollected in September of 1990. Pavel M. Kartashov collection and photo. |
| © Pavel M. Kartashov | Photo ID: 75087 View Count: 274 |
Caysichite-(Y) : Ca2Y2Si4O10(CO3)3·4H2O, Fluorite (Var: Yttrofluorite) : (Ca1-xYx)F2+x where 0.05< x <0.3 | |
|
Ploskaya Mt, Western Keivy Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia Brownish inclusions of caysichite-(Y) with white tengerite-(Y) rims into yttrofluorite of the first generation. Associated minerals are quartz, cleavelandite, minor reddish-brown monazite-(Ce) and dark violet yttrofluorite of the second generation (in the upper left corner). FOV is ~1.5x1.2 cm. Selfcollected in September of 1990. Pavel M. ... |
| © Pavel M. Kartashov | Photo ID: 75080 View Count: 168 |
Caysichite-(Y) : Ca2Y2Si4O10(CO3)3·4H2O | |
|
Ploskaya Mt, Western Keivy Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia Width of field is 1.7 mm. Collection of Jesse Crawford. The depth of field has been enhanced using Helicon Focus (20 exposures). Equipment: Nikon D-100 on a homemade microscope. |
| © 2008 Jesse Crawford | Photo ID: 174678 View Count: 86 |
Cerussite : PbCO3, Fluorite (Var: Yttrofluorite) : (Ca1-xYx)F2+x where 0.05< x <0.3, Albite (Var: Cleavelandite) : Na[AlSi3O8], Zinnwaldite : KLiFe2+Al[(F,OH)2|AlSi3O10] | |
|
Ploskaya Mt, Western Keivy Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia Cavity after dissolution of Galena grain filled with brownish crystalline Cerussite in Cleavelandite-Yttrofluorite aggregate with minor dark Zinnwaldite xls. Specimen size is 7x4.5x3-1 cm. Selfcollected in September of 1990. Pavel M. Kartashov collection and photo. |
| © Pavel M. Kartashov | Photo ID: 262701 View Count: 12 |
Cerussite : PbCO3, Fluorite (Var: Yttrofluorite) : (Ca1-xYx)F2+x where 0.05< x <0.3, Zinnwaldite : KLiFe2+Al[(F,OH)2|AlSi3O10] | |
|
Ploskaya Mt, Western Keivy Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia Cavity after dissolution of Galena grain filled with brownish scalenohedres of Cerussite in violet and yellow Yttrofluorite aggregate with dark plates of Zinnwaldite. FOV is ~22x17 mm. Selfcollected in September of 1990. Pavel M. Kartashov collection and photo |
| © Pavel M. Kartashov | Photo ID: 262703 View Count: 9 |
Fluorite (Var: Yttrofluorite) : (Ca1-xYx)F2+x where 0.05< x <0.3, Caysichite-(Y) : Ca2Y2Si4O10(CO3)3·4H2O | |
|
Ploskaya Mt, Western Keivy Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia Big flesh-coloured yttrofluorite-I (pinkish to white, Y+HREE content is ~35%, its composition almost equal to tveitite-(Y) one, but it is still cubic) with rich inclusions of white caysichite-(Y). This is the earliest generation of fluorite on the locality. Associated minerals are quartz, cleavelandite, amazonite and zinnvaldite. Specimen size is ... |
| © Pavel M. Kartashov | Photo ID: 72918 View Count: 656 |
Fluorite (Var: Yttrofluorite) : (Ca1-xYx)F2+x where 0.05< x <0.3, Microcline (Var: Amazonite) : K[AlSi3O8], Zinnwaldite : KLiFe2+Al[(F,OH)2|AlSi3O10], Albite : Na[AlSi3O8] | |
|
Ploskaya Mt, Western Keivy Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia Violet veinlet of the most later on the locality Yttrofluorite-III (with only 1-2% of Y and REE-free) in green Amazonite block. Associating minerals are white Albite mirmekites within amazonite grain and dark Zinnwaldite basement. Grain of former flesh-coloured Yttrofluorite-I is visible on the rightmost end of the specimen. Its size is 8x6x4 cm. ... |
| © Pavel M. Kartashov | Photo ID: 262715 View Count: 22 |
| |
|
Ploskaya Mt, Western Keivy Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia Big monograin of flesh-coloured Yttrofluorite-I looks like Tveitite-(Y) and has similar composition (Y+HREE content is ~35%), but it is still cubic. This is the earliest generation of fluorite on the locality. This specimen is unusually fresh and dont contain products of decomposition formed during replacement of Yttrofluorite-I by violet ... |
| © Pavel M. Kartashov | Photo ID: 262549 View Count: 21 |
Fluorite (Var: Yttrofluorite) : (Ca1-xYx)F2+x where 0.05< x <0.3, Kainosite-(Y) : Ca2(Y,Ce)2Si4O12CO3·H2O, Zinnwaldite : KLiFe2+Al[(F,OH)2|AlSi3O10], Microcline (Var: Amazonite) : K[AlSi3O8], Albite : Na[AlSi3O8] | |
|
Ploskaya Mt, Western Keivy Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia Replacement crusts of violet to brownish Yttrofluorite-II after cavernous cores of yellow Yttrofluorite-I. White minor streaks within dark Zinnwaldite plates are prismatic Kainosite-(Y) crystals. Other associating minerals are green Amazonite and white Albite mirmekites within it. Also present invisible under such magnification Keiviite-(Yb), ... |
| © Pavel M. Kartashov | Photo ID: 262713 View Count: 19 |
| Page 1 of 5 (1 to 10 of 41 total) | Next Page | |
| Page: 1 2 3 4 5 | ||
