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Modris Baum's Photo Gallery

RM9-LVCGalena : PbS

Multiple photos available
Demix-Varennes quarry, Saint-Amable sill, Varennes & St-Amable, Lajemmerais RCM, Montérégie, Québec, Canada

Field of View: 1.0 mm
Largest Crystal Size: 0.5 mm

This is just another example of the "lath-like" habit of much of the galena in the Saint-Amable sill. The c rystal is tiny and I had to use very high magnification - not very satisfactory given the optics in my scope.
Photo ID: 896507     Uploaded by: Modris Baum   View Count: 12   Approval status: Public galleries    Type: Photo - 2376 x 2850 pixels (6.8 Mpix)

W2C-JK8Raite : Na4Mn2+3Ti0.25Si8O20(OH)2·10H2O, Serandite : NaMn2+2Si3O8(OH)

Multiple photos available
Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada

Field of View: 2.3 mm

This specimen is from the well-known 2003 find of abundant raite at MSH. (See the related lintisite photos for some details.)

I have posted several other photos of raite from this find, so this may seem like overkill. The main reason for poisting this one is that, per qualitative EDS, not only are the acicular crystals raite, but so is the the very compact, deep purple, mass of fibers from which the more typical raite emantes. (The fibrous nature of the compact mass is evident only under SEM.)

The yellowish prism is high Ca serandite. Per qualitative EDS, it is near "mangano-pectolite" in composition. (See the related analysis "photo".)

I have included the EDS scan for the purple mass as a child "photo". There is also a stereo version of this parent photo. Some of the other minerals on this specimen are shown in "related" (same minID) photos.
Photo ID: 896198     Uploaded by: Modris Baum   View Count: 29   Approval status: Public galleries    Type: Photo - 3132 x 4675 pixels (14.6 Mpix)

W2C-JK8Lintisite : LiNa3Ti2(Si2O6)2O2·2H2O, Eudialyte Group

Multiple photos available
Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada

Field of View: 1.2 mm
Largest Crystal Size: 0.3 mm

Identification of the colorless/white needles/laths as lintisite is based on a qualiative EDS scan in conjunction with visual appearance and environment/association. The EDS scan is presented as a child "photo", which see for a full discussion of the ID.

The specimen is from the well-known 2003 find of abundant raite and epistolite (see for example [https://www.mindat.org/photo-763740.html]). Other associated minerals in this find (not all of them on this specimen) included terskite, lovozerite, steenstrupine-(Ce), Ca rich sérandite, manganoneptunite, willemite, "eudialyte" (perhaps kentbrooksite), rhabdoaphane-(Ce), sodalite, and some UKs (one of which is shown in a child photo under this minID). Also from this find are unusaul (for MSH) prismatic crystals of gmelinite-Na. The ones on this specimen are shown in related photos under this same minID. A more complex example is shown in [https://www.mindat.org/photo-287173.html] and several other photos.

Child photos include a stereo version of this parent photo and a stereo view of a broader area showing more of the lintisite. The dark background mineral is etched "eudialyte". Some raite nedles can also be seen.
Photo ID: 896192     Uploaded by: Modris Baum   View Count: 26   Approval status: Public galleries    Type: Photo - 2929 x 3893 pixels (11.4 Mpix)

9HD-1CTBavenite : Ca4Be2Al2Si9O26(OH)2

Multiple photos available
Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada

Field of View: 2.4 mm
Largest Crystal Size: 1.1 mm

From a marble xenolith, associted with pectolite, small medium-green "arfvedsonite" (probably magnesio-) prisms, and tiny pseudo-cubo-octahedral apophyllite - as is typical at MSH.

There is a stereo child photo.
Photo ID: 896077     Uploaded by: Modris Baum   View Count: 11   Approval status: Public galleries    Type: Photo - 703 x 1024 pixels (0.7 Mpix)

W5C-TNPPyrochlore Group : A2Nb2(O,OH)6Z, Catapleiite : Na2Zr(Si3O9)·2H2O, Aegirine : NaFe3+Si2O6

Multiple photos available
Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada

Field of View: 3.55 mm

Another black pyrochlore from the same find as [https://www.mindat.org/photo-183449.html], this one a bit > 0.5 mm on edge, directly associated with white catapleiite (0.6 mm) and aegirine. For more on the catapleiite and other associated minerals, see the “related” photos.
This type of pyrochlore has not been analyzed (by me). The two confirmed “pyrochlore” species at MSH are fluorcalciopyrochlore and fluornatropyrochlore. Analysis of a (probable) fluorcalciopyrochlore from another find [https://www.mindat.org/photo-299374.html], showed very high levels of Si – apparently a common thing at MSH. In this case, I would not be surprised to see a lot of Th - just a guess.
Photo ID: 874181     Uploaded by: Modris Baum   View Count: 28   Approval status: Public galleries    Type: Photo - 1024 x 603 pixels (0.6 Mpix)

W5C-TNPCatapleiite : Na2Zr(Si3O9)·2H2O, Aegirine : NaFe3+Si2O6

Multiple photos available
Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada

Field of View: 6.85 mm
Largest Crystal Size: 0.9 mm

Catapleiite “butterflies” on aegirine “twigs”. These are very small "butterflies". The largest “wingspan” is ca 1.2 mm.

The catapleiite is associated with black “pyrochlore” similar to [https://www.mindat.org/photo-183449.html]. It is from a find that also had thin tabular rhodochrosite of a very similar habit [e.g. https://www.mindat.org/photo-163671.html]. But this isn’t just “washed-out” rhodochrosite. Slightly larger crystals on this and other specimens [e.g. https://www.mindat.org/photo-455677.html] look like typical catapleiite and there is a continual transition from these smaller crystals to the larger ones.

Also in this find was a great deal of more typical “pyrochlore” [e.g. https://www.mindat.org/photo-312834.html] and an unidentified murmanite group mineral. See [https://www.mindat.org/photo-571112.html].
Photo ID: 874026     Uploaded by: Modris Baum   View Count: 41   Approval status: Public galleries    Type: Photo - 1024 x 685 pixels (0.7 Mpix)

9TN-LGQNormandite : NaCa(Mn,Fe)(Ti,Nb,Zr)(Si2O7)OF

Multiple photos available
Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada

Field of View: 2.9 mm
Largest Crystal Size: 1.1 mm

This is a somewhat unusual example of small, but free growing, crystals of normandite. The saample was conformed via qualiative EDS (to the extent that that is possible). See the child analysis "photo".
Photo ID: 868519     Uploaded by: Modris Baum   View Count: 34   Approval status: Public galleries    Type: Photo - 1024 x 803 pixels (0.8 Mpix)

EA0-QUXAdamsite-(Y) : NaY[CO3]2·6H2O, Franconite : Na(Nb2O5)(OH)·3H2O, Synchysite-(Ce) : CaCe(CO3)2F, Rhabdophane-(Ce) : Ce(PO4)·H2O

Multiple photos available
Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada

Field of View: 3.05 mm

This is a good example of terminated adamsite-(Y) (top) with franconite (bottom-center). The franconite "puff-ball" is ca 1.1 mm in diameter.The off-white flaky stuff in the bottom right corner is a pseudomorph of synchysite-(Ce) with some rhabdopahne-(Ce) (or perhaps monazite-(Ce)) after an unknown precursor (not petersenite-(Ce). (See one of the "related" analysis photos for an EDS scan for the PSMs.)

In addition to the adamsite-(Y), this interesting specimen also host two other type locality minerals: thomasclarkite-(Y) and niobokupletskite (on kupletskite). These are shown in various "realted" (same minID) photos. There are also several other child photos showing more of the adamsite on the specimen.
Photo ID: 868492     Uploaded by: Modris Baum   View Count: 36   Approval status: Public galleries    Type: Photo - 1024 x 696 pixels (0.7 Mpix)

EA0-QUXThomasclarkite-(Y) : (Na,Ce)(Y,REE)(HCO3)(OH)3·4H2O, Synchysite-(Ce) : CaCe(CO3)2F, Rhabdophane-(Ce) : Ce(PO4)·H2O

Multiple photos available
Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada

Field of View: 3.7 mm

This photo shows a twin (or group) of thomasclarkite-(Y) crystals along with a "flaky" pseudomorph of synchysite-(Ce) with some rhabdophane-(Ce) (or perhaps monazite-(Ce). The precursor is not known. These PSMs are mostly thick tabular. They do not look like the PSMs after petersenite-(Ce) which were much more common in the Poudrette pegmatite. See the analysis child photo.

Also on this specimen are two other type locality minerals: adamsite-(Y) and niobokupletskite. And there is also a bit of franconite. These minerals are shown in the "realted" photos posted under the same minID.
Photo ID: 868489     Uploaded by: Modris Baum   View Count: 36   Approval status: Public galleries    Type: Photo - 1024 x 627 pixels (0.6 Mpix)

EA0-QUXNiobokupletskite : K2NaMn2+7(Nb,Ti)(Si4O12)2O2(OH)4(O,F), Kupletskite : (K,Na)3(Mn,Fe)7Ti2Si8O26(OH)4F

Multiple photos available
Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada

Field of View: 2.45 mm

This example of niobokupletskite has been verified (to the extent possible) via qualitative EDS. It is "typical" in that it occurs as an overgrowth on much darker kupletskite (which, however, was not analyzed). See the analysis child "photo".

The niobokupletskite is part of a very interesting specimen also hosting two other typelocality species: adamsite-(Y) and thomasclarkite-(Y). In addition, there is a small amount of franconite and several PSMs of synchysite-(Ce) with rhabdophane-(Ce) (or perhaps monazite-(Ce)) after an unknown blocky precursor (not the usual petersenite-(Ce)). Photos of these minerals, as well as an EDS scan for the synchysite PSMs are posted as "related" photos.
Photo ID: 868485     Uploaded by: Modris Baum   View Count: 41   Approval status: Public galleries    Type: Photo - 1024 x 681 pixels (0.7 Mpix)
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