Show IN SOUTHERN california by will baughman monrovia peak is a mountain of about feet elevation and situated directly north of the town of the same name in los angeles county on the southwestern slope of this peak is an altered pegmatite in a disseminated deposit of a samar the mineral differs from previously reported samar in containing both titanium and vanadium oxides the mineral occurs in particles barely visible to one nugget an inch in diameter As determined at present the are area a in which the mineral occurs is about feet wide vide and feet long owing to the st steepness eeness of the region occasional land slides have kept fresh surfaces exposed and very little surface oxidation is visible the presence of the mineral has been known for several years and it was at first supposed to be a variety of magnetite which occurs close by it was vw only when it was determined that the mineral was not magnetic that an attempt was made to ascertain its true nature in a way this error is perfectly natural as the mineral has a velvety black color and is about the same gravity and hardness as the magnetite in question most complex mineral known although prepared by the previous mineralogical er examination the analysis of the mineral has brought to light what is possibly the most complex mineral known twenty elements most of them rare are present and over and one half per cent of the contents of the mineral are still to be accounted for the mineral is velvet black in color has a shining lustre is 6 in hardness has a brownish dark streak is brittle and has a sub fracture the specific gravity ity is 6 and while no distinct crystals have been found the crystallization appears to be orthorhombic this all agrees with the it was ony only description of and that the vanadium on chemical analysis and titanium contents were found the commercial value of the find is very and an doubtful even when the accessibility low cost of operating is considered de that ahn ilar it is more than likely the tag e oi of posits containing a larger percentage repeatedly peat edly jasd pa re have been of this iiii deposit over A commercial would be valuable analysis of monrovia peak kite sno 2 tin oxide 5 wa tungsten oxide 3 3 q 1 va va vanadium oxide 1 titanium oxide up s 1913 uranium oxide 0 taa tantalum oxide cb c 03 Colum columbium bluni oxide ZI y 0 21 2 9 10 1 oxide zirconium tho ari i 0 Thor thorium luni oxide lh ceon 2 cerium cerlini oxide Samar samarium imn ind and didium and Galo llUll 0 ox 2 31 12 ides yttrium erbium and scandium 11 oxides feo fea iron oxide oaid e 0 manganese oxide abo Q 01 0 lead oxide xo nio 0 as nickel oxide cao Q lime potassium sodium and Q iia lv I 61 etim ium oxides undetermined ile preset radia elements gold and anver |