This is certainly the largest, and also one of the best specimens of ferrocolumbite I have seen from ANY locale. It was part of Bancroft's competition worldwide case, 30 years or more ago, and comes with his "custom foam base" which is of the style used at that time (tacky...). It is a huge and well formed crystal with good luster, a rich chocolate-brown color, and with interesting vertical striations. The termination is pristine and only the back side is contacted - otherwise it is complete all around! This specimen has to be considered one of the finest of its species. Absolutely mind boggling!
Jinginarwa: Rob Lavinsky, iRocks.com – CC-BY-SA-3.0
Za ka iya:
a raba – dan kwafa, yadawa da aika aikin
dan maimaita – dan daukar aikin
A karkashin wannan sharuddan
Jinginarwa – Dole ku bada jinjina da ta dace, samar da linki zuwa lasisin, da kuma bayyana ko kunyi sauyi. Zaku iya haka ta yadda ta dace, amma ba kowace hanya ba wanda zai nuna mai-lasisin yana goyon bayan ku ba ko goyon bayan amfanin da kuke yi ba.
Yada ahaka – Idan kuka maimaita, sabuntawa, ko kari akan wannan, dole ku bayar da gudunmuwar ku karkashin iri daya ko lasisi data dace kamar na asali.
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