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Updated: May 23, 2025
The serpentine is sometimes of an esquillous, sometimes of a conchoidal fracture: this was the first time I had found metalloid diallage within the tropics. It were to be wished that these fine masses were employed in the arts as they are in several parts of Germany.
This rock is much fendillated, externally of a bluish-grey, covered with dendrites of manganese, and internally of leek and asparagus-green, crossed by small veins of asbestos. It contains no garnet or amphibole, but metalloid diallage disseminated in the mass.
The materials of this cement and their proportions were as follows. Briefly, having determined to take advantage of the approaching opposition of Mars in MDCCCXX ... , I had my vessel constructed with walls three feet thick, of which the outer six and the inner three inches were formed of the metalloid.
I found no traces of this grey copper: it is probably the metalloid diallage that has given the Cerro de Guanabacoa the reputation of riches in gold and silver which it has enjoyed for ages. In some places petroleum flows* from rents in the serpentine. That spring, however, fixed the attention of Ocampo on the port of the Havannah, where he gave it the name of Puerto de Carenas.
This I afterwards ascertained beyond doubt to be a metalloid alloy whereof the principal ingredient was aluminium, or some substance so closely resembling it as not to be distinguishable from it by simple chemical tests.
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