74 natural history. (Minerals.) [north 
titanate of lime, called sphene or titanite, and, among these, the varieties 
formerly designated by the name of brown and yellow menakamte, m 
large crystals, from Arendal in Norway ; the variety from St. Gothard, 
called rayonnante en gouttiere by Saussure, on feldspar with 
chlorite, &c. ; — the polymignite , found in the zircon-syenite of 
Fredricsvarn in Norway, and composed chiefly of the titanates ot 
zirconia and yttria ; also the ceschynite from the lake Ilmen near Miask, 
being a titanate of zirconia and oxide of cerium the eerstedtite, a tita- 
nate" of zirconia with lime, magnesia and protoxide of iron, from Aren- 
dal ; the mosandrite , from the same locality, being a silico-titanaie 
of lantane, manganese, &c. ; the yttrotitanite or keilhauite the 
qreenovite (sphene coloured by manganese), from St. Marcel, Pied- 
mont;— and lastly the iron titanites, variously combined with the prot- 
oxide'of that metal, in many of those varieties of volcanic and. other 
specular iron which exhibit a glassy fracture, as likewise in the minerals 
known by the names of axotomous iron or kibdelophane , crightonite * 
menacanite , nigrine , iserine , ilmenite , &e. _ . 
Case 38. In this Table Case (besides the silicates containing 
yttria and protoxide of cerium, mentioned in the description of Case 
37) are placed the following orders of minerals. 
Combinations of columbic or tantalic acid with protoxides of iron, 
manganese, lime, yttria, zirconia, &c. : among the columbates or tan- 
talates here deposited may be specified the specimen of tantalite (co- 
lumbite ) sent by Gov. Winthrop to Sir Hans Sloane, In which Mr. 
Hatchett, in 1801, discovered the metal denominated by him co- 
lumbium, but which, eight or nine years later, was ascertained by Dr. 
Wollaston to be identical with the metal found nearly about the same 
time in the tantalite and yttrotantaiite by Eckeberg, who had called it 
tantalum : a name that had become familiar to continental chemists and 
mineralogists, and was therefore retained by them;— the same from 
Rabenstein in Bavaria, accompanied by crystallized beryl and ura- 
nite the Finbo- and the Brodbo-tantalites of Berzelius ;— the yttro- 
tantaiite , from Ytterby, the uranotantalite of G. Rose, irorn Miasx, 
Siberia; the microlite of Shepard, from Chesterfield, Massachusetts, 
(apparently a titanate of lime,) the wohlerite of Scheerer, &c. 
Oxides of antimony : — antimony -ochre on native and grey antimony; 
several varieties of the scarce white antimony , from Przibram in Bo- 
hemia, on galena, quartz, &c. ; \--red antimony , also called antimony r- 
blende , (a combination of oxide and sulphuret of this metal,) mostly in 
fine capillary crystals, from Braunsdorfin Saxony, Malazkain Hungary ; 
and an argentiferous variety from the Hartz, in fibrous flakes resembling 
tinder, and therefore called zunderertz (tinder ore). 
Tungstates : — tungstate of lime (scheelin caicaire of Haliy), also called 
scheelite and tungsten (heavy stone), among the more interesting speci- 
mens of which are the primitive acute octahedron from Allemont m 
Dauphiny, and the group of very large crystals from Schlackenwald in 
Bohemia ; tungstate of iron and manganese or wolfram , massive and 
crystallized, from Schlackenwald and other localities ; also as octahedral 
supposititious crystals, derived from tungstate of lime;— tungstate of lead, 
or scheel-lead, , from Zinnwald in Bohemia, formerly confounded with 
the molybdate of this metal. 
Yanadic acid and vanadates. Vanadium was discovered in some ores 
