Grandidierite - Mineral specimens search results

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Mineral specimens search results for [ Grandidierite ]

A novelty at Tucson 2016. An isolated crystal, translucent, bright, with a uniform and intense bluish-green color, with very well defined and deeply striated prismatic faces for the species. Of an excellent quality for this rare silicate.
Grandidierite deposit, Tranomaro Commune, Tranomaro-Maromby mining area, Amboasary District, Anosy Region Madagascar (05-12/2015)
Specimen size: 2.4 × 2.2 × 1 cm = 0.94” × 0.87” × 0.39”

ETX89AQ1: Grandidierite

Floater group of Grandidierite crystals with very sharp crystal forms, translucent, shiny and of a deep and uniform greenish blue color.
Tranomaro Commune, Tranomaro-Maromby mining area, Amboasary District, Anosy Region Madagascar
Specimen size: 2.2. × 1.7 × 0.7 cm = 0.87” × 0.67” × 0.28”

TZZ54CD6: Grandidierite

Grandidierite crystal of considerable size for the species, of a very uniform and deep bluish green color, and accompanied in the base of the crystal by a pseudomorph, possibly after Tourmaline, replaced by minerals whose species could not be clearly identified, beyond being a mixture of silica gel with remnants of Opal. Mineralogy never ceases to surprise us, and certainly the pegmatites of Madagascar do not stop surprising us.
Tranomaro-Maromby mining area, Amboasary District, Anosy Region Madagascar
Specimen size: 4.1 × 3.4 × 1.2 cm = 1.61” × 1.34” × 0.47”

ED56AL5: Grandidierite

Undoubtedly one of the best, if not the best, uncut Grandidierite crystal found in the deposit, both for the perfection of its crystal forms and for its luster, transparency and color intensity, as well as for its gem quality. All this made it worthy of being on the cover of the German magazine Mineralien Welt, and it was also featured in the Mineralogical Record.
This specimen is on the front cover of the 'Mineralien Welt' edition 06/2019, and has been reviewed, photographed and published as a new discovery of Munich 2019 in the ‘Mineralogical Record’ on page 380 in the volume 51, number 2, May-April 2020, and in the Russian magazine ‘Mineral Observer’ on page 85 in the volume 26/2021, number 1
Tranomaro Commune, Tranomaro-Maromby mining area, Amboasary District, Anosy Region Madagascar (09-10/2018)
Specimen size: 1.1 × 1 × 0.8 cm = 0.43” × 0.39” × 0.31”

TTV68AP8: Grandidierite with Feldspar

Grandidierite floater crystal with unusually well developed crystal forms, translucent, and with an intense and uniform blue-green color. An excellent classic from Madagascar.
Tranomaro Commune, Tranomaro-Maromby mining area, Amboasary District, Anosy Region Madagascar
Specimen size: 3.2 × 2.2 × 1.4 cm = 1.26” × 0.87” × 0.55”

TP50AH2: Grandidierite with Feldspar

Very sharp flattened and complete crystal (on the base it has small fragments of a feldspar matrix) with very well defined faces and edges and a perfect termination, slightly rough but free of damage. It is translucent and has a very deep and uniform bluish-green color. Among the best for this very rare species, a classic from Madagascar.
Tranomaro Commune, Tranomaro-Maromby mining area, Amboasary District, Anosy Region Madagascar (02-06/2017)
Specimen size: 2.9 × 2.3 × 0.8 cm = 1.14” × 0.91” × 0.31”

Main crystal size: 2.9 × 1.6 cm = 1.14” × 0.63”

TM49AI2: Grandidierite with Feldspar

Some minerals are fortunate, either for the time they were discovered, or by the circumstances of their discovery or even by the place where they were found and beyond their greater or lesser beauty, of having become true myths of mineralogy. This is what happens with the Grandidierite of which, in addition, recent discoveries of an exceptional quality have been made to date, as is the case with this splendid individual flattened crystal with faces and edges unusually sharp and with the top termination very well defined while the lower termination is polycrystalline and somewhat rough. The crystal is bright, between transparent and translucent and it has a very deep and uniform bluish-green color.
Tranomaro Commune, Tranomaro-Maromby mining area, Amboasary District, Anosy Region Madagascar (02-06/2017)
Specimen size: 3.9 × 1 × 0.3 cm = 1.54” × 0.39” × 0.12”

EAG96CD1: Grandidierite with Feldspar

Unusual, both due to the fact that the crystal is isolated and well defined in its Feldspar matrix as well as for being so aerial, so free, so that its morphology is perfectly displayed. Very few grandidierites have been found in matrix and even fewer so aerial.
Grandidierite deposit, Tranomaro Commune, Tranomaro-Maromby mining area, Amboasary District, Anosy Region Madagascar (2017-2018)
Specimen size: 3.2 × 1.8 × 1.7 cm = 1.26” × 0.71” × 0.67”

Main crystal size: 1.4 × 1 cm = 0.55” × 0.39”

MQ28AG8: Grandidierite with Feldspar

Grandidierite is one of the great myths of mineralogy, especially in the field of rare species. It was believed that we would never see more Grandidierites of such quality as those that exist in the great museums of the world, especially the museums of Paris, but for a couple of years in a little-known Madagascar site excellent Grandidierites have been appearing, some of them of as great quality as the famous specimens that appeared in the past.
This specimen was photographed for the ‘Munich 2017’ section of the magazine ‘Mineralien Welt’ and appears on page 70 of number 1/2018, and for the magazine ‘Mineralogical Record’ on page 338 in the volume 49, number 2
Tranomaro Commune, Tranomaro-Maromby mining area, Amboasary District, Anosy Region Madagascar (02-06/2017)
Specimen size: 5.4 × 2.8 × 2.9 cm = 2.13” × 1.10” × 1.14”

TR49AD0: Grandidierite with Feldspar and Diopside

A novelty at Tucson 2016. An isolated crystal on matrix. It is translucent, bright, with a uniform and intense bluish-green color and with very well defined prismatic faces. Of an excellent quality for this rare silicate.
Grandidierite deposit, Tranomaro Commune, Tranomaro-Maromby mining area, Amboasary District, Anosy Region Madagascar (05-12/2015)
Specimen size: 2.8 × 2.4 × 0.8 cm = 1.10” × 0.94” × 0.31”

TD86AH6: Grandidierite with Feldspar and Quartz

Group of Grandidierite crystals on matrix, one of them clearly dominant and very large for the species. The crystals, unusually well defined, are translucent and have a uniform and intense bluish-green color. The main crystal has a rough termination but it is complete, as the detailed image shows. The sample has great quality for this rare silicate.
Tranomaro Commune, Tranomaro-Maromby mining area, Amboasary District, Anosy Region Madagascar (02-06/2017)
Specimen size: 7.5 × 4.8 × 3.2 cm = 2.95” × 1.89” × 1.26”

TC71AD0: Grandidierite with Feldspar, Schorl and Diopside

A novelty at Tucson 2016. Parallel growth, on matrix, of translucent and bright crystals with a uniform bluish green color and with very well defined prismatic faces. Of an excellent quality for this rare silicate.
Grandidierite deposit, Tranomaro Commune, Tranomaro-Maromby mining area, Amboasary District, Anosy Region Madagascar (05-12/2015)
Specimen size: 4 × 2.6 × 2.3 cm = 1.57” × 1.02” × 0.91”

EZ86AK7: Grandidierite with Phlogopite

Grandidierite crystals, one of them clearly dominant, with the faces and edges of the prism well defined, translucent, brilliant and a deep uniform greenish-blue. Of excellent quality for this rare silicate due to the upper termination that, although somewhat rough, is complete.
Tranomaro Commune, Tranomaro-Maromby mining area, Amboasary District, Anosy Region Madagascar
Specimen size: 3.2 × 2.2 × 1.2 cm = 1.26” × 0.87” × 0.47”

TD47AD0: Grandidierite with Quartz and Feldspar

A novelty at Tucson 2016. An isolated crystal on matrix. It is translucent, has a uniform bluish-green color and has very well defined faces and edges (also the terminal). Of an excellent quality for this rare silicate.
Grandidierite deposit, Tranomaro Commune, Tranomaro-Maromby mining area, Amboasary District, Anosy Region Madagascar (05-12/2015)
Specimen size: 3.8 × 3.2 × 1.8 cm = 1.50” × 1.26” × 0.71”

Main crystal size: 1.4 × 0.4 cm = 0.55” × 0.16”

MX51AD5: Grandidierite with Quartz and Feldspar

A novelty at Tucson 2016. Single crystals on a massive Quartz matrix. The crystals have some very well developed faces and edges on the prism, which is very uncommon for the species. The crystal is translucent and bright and has a uniform greenish blue color. Of an excellent quality for this rare silicate.
Grandidierite deposit, Tranomaro Commune, Tranomaro-Maromby mining area, Amboasary District, Anosy Region Madagascar (05-12/2015)
Specimen size: 6.5 × 3.5 × 4 cm = 2.56” × 1.38” × 1.57”

TA93AD0: Grandidierite with Quartz and Mica

A novelty at Tucson 2016. Single crystal on matrix, with a uniform bluish green color and with faces and edges very much better defined than usual for this species. Of an excellent quality for this rare silicate.
Grandidierite deposit, Tranomaro Commune, Tranomaro-Maromby mining area, Amboasary District, Anosy Region Madagascar (05-12/2015)
Specimen size: 5.5 × 4 × 3.9 cm = 2.17” × 1.57” × 1.54”

Main crystal size: 2.7 × 2.3 cm = 1.06” × 0.91”

TF67AD0: Grandidierite with Quartz, Feldspar and Diopside

TC69AD0: Grandidierite with Quartz, Feldspar and Diopside

A novelty at Tucson 2016. Parallel growth, on matrix, of translucent and very bright crystals with a uniform and intense bluish green color and with very well defined prismatic faces. Of an excellent quality for this rare silicate.
Grandidierite deposit, Tranomaro Commune, Tranomaro-Maromby mining area, Amboasary District, Anosy Region Madagascar (05-12/2015)
Specimen size: 5.6 × 3.3 × 2.5 cm = 2.20” × 1.30” × 0.98”

Main crystal size: 4 × 1.8 cm = 1.57” × 0.71”

TE99AD0: Grandidierite with Quartz, Feldspar and Diopside

TG29AD0: Grandidierite with Quartz, Feldspar, Diopside and Mica

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