Geosec Thin section geology microscope slide Luxulyanite RARE + SPECIAL


Geosec Thin section geology microscope slide Luxulyanite RARE + SPECIAL

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Geosec Thin section geology microscope slide Luxulyanite RARE + SPECIAL:
$50.45


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This is a thin section of Luxulyanite, a very rare form of Tourmaline Granite from Luxulyan in Cornwall. In hand specimen a pink and black rock, used as a ornamental stone. In thin section the black part resolves into quartz filled with tourmaline needles in a spherulitic arrangement, stars of thin needles radiating from a central point. Being pleochroic the needles change colour from blue to brown in ppl as the slide is rotated, and are even more colourful in xpl. It is difficult to find words to describe this effect, no other rock in thin section comes close. The rock is mentioned and illustrated (usually in drawings) in many petrological texts.

I only offer this material rarely. It has taken me several years to obtain a sample of this material, I do not know of it occuring elsewhere and the quarry is partially flooded, and fenced off for safety.

A Sample not available due to very limited amount of material. (unless you are lucky!)

The description is provided as a guide as to what to expect, but buyers should identify the rock type and minerals for themselves. Some features will require a polarising microscope to view. Slides are prepared with the greatest of care, ground to the correct thickness, and covered with a glass cover slip. However if you are not satisfied with any slide I will refund the purchase price (except the postage) if you return the slide within 7 days


Slides listed on this site are new, mostly made within a day or two of being listed. This means that the cement is crystal clear and not yellowed by age, often a problem with old secondhand university slides.

The specimens of rock used for the slides are specially selected for interesting mineralogy and texture, or other reasons such as rarity or famous source locations. Unlike old university slides, which may be made from any student supplied material, Geosec Slides are made from very carefully chosen material in order to be of the highest educational value.

All slides are 26 x 76mm, and are covered by glass coverslip. I regret Geosec cannot supply polished, uncovered slides.

Payment can be by paypal or cheque. Paypal is quicker and is preferred if you are paying in anything other than Sterling. You can wait and combine items if you wish to save on postage, but please will new buyers contact me to say you are doing this. PAYMENT MUST BE MADE WITHIN 30 DAYS OF THE FIRST PURCHASE. internal proceedures automatically classify any unpaid item over 30 days as a dispute case and I am unable to manage items such as removing postage and combining items. ANY ITEMS OVER 30 DAYS WILL CARRY FULL POSTAGE ONEACHSLIDE.


Dispatch usually each morning if items paid for by 9.00am local time. No post from here Saturdays/Sundays/Bank Holidays


For more information about the purchase of slides go to Geosec information page

GEOSEC is pleased to announce a new Identification Assistant to help you identify minerals in thin section slides.

on Geosec Slides website > MINERALS.


Contact is best by email, either at the contact page on the website or by using \'s \'contact seller\' link.



Geosec Thin section geology microscope slide Luxulyanite RARE + SPECIAL:
$50.45

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