Osarizawaite, a new mineral. from the Osarizawa mine occurs in the oxidized zone of lead-zinc-copper veins as earthy and friable masses, associated with other secondary minerals of lead or copper. The chemical formula of osarizawaite has been determined as Pb (Cu_0.98 Zn_0.02) (Al_0.81 Fe_{0.1 ??} )₂ (SO₄)₂ (OH)₆. Its physical and optical properties are: greenish-yellow in colour; specific gravity=3.89-4.02, 4.20 (calc.); mean index of refraction=1.735-1.757, birefringence strong. The unit cell dimensions for both the hexagonal cell and the corresponding rhombohedral cell are: α₀=7.05Å., c₀=17.23Å., Z=3; α_rh=7.04Å., α=60°06′, Z=1. The data obtained demonstrate that the mineral is a new species being the aluminum analogue of beaverite and belongs to the alunite group. A new mineral name, osarizawaite, is proposed for the mineral which belongs to the alunite group and whose ideal chemical formula is PbCuAl₂(SO₄)₂(OH)₆ where Cu and Al may be partially replaced by Zn and Fe respectively.

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In the Ningyô-tôgé area, uranium is emplaced in the Neogene basal conglomerate deposited on the eroded surface of the Mesozoic granite. The geological environment of the uranium ores is similar to the general sandstone type uranium deposits, but the mineralogy is peculiar in some respects. three uranium minerals, ningyoite, autunite and uraninite have been identified in the mine, and besides them humic acid, limonite and biotite were found to be uraniferous. Most of the uranium in the ores is contained principally in ningyoite in the unoxidized zone, and in autunite in the oxidized zone. Uranium of the other forms occurs rather locally or less abundantly.
The ores are mostly composed of allogenic rock forming minerals and their altered products. authigenic minerals, though they are less in the amounts than the allogenic minerals, occur commonly coating pebbles or mineral grains, filling cavities, and replacing allogenic minerals. These are kaolinite, chlorite, montmorillonite, carbonaceous matter, marcasite, pyrite, sphalerite, gypsum, melanterite, uranous minerals, sericite, calcite, siderite, limonite and uranyl minerals, roughly in the order of the formation. the last four minerals are found only in the oxydized zone. Part of the authigenic minerals appears to have been formed during the diagenesis and the others were precipitated from or altered by the extrinsic solution. The correlation analysis revealed that uranium is associated with P, S, Ca, Zn and As, and the exceedingly good correlation of phosphorus with uranium has been demonstrated. The correlation analysis was applied also for some minerals, which were analyzed quantitatively with X-ray diffractometer. Remarkably good correlation was found between uranium and sericite, and between uranium and gypsum, while the strongly negative correlation was shown between uranium and kaolinite.
These statistical consideration of uranium with some authigenic minerals and elements, together with the paragenetic study of the ores by microscopic observation indicated that uranium was precipitated mostly as ningyoite with gypsum from uranium containing ore solution, which transformed kaolinite partly into sericite during the uranium mineralization.

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The crystal structure of antlerite has been worked out by means of the heavy atom method through the two-dimensional Patterson and Fourier syntheses. The lattice constants of the mineral are a₀=8.23±0.02Å., b₀=12.00±0.02Å. and c₀=6.03±0.01Å. Its space group is Pnam, and there are four chemical units of composition Cu₃(SO₄)(OH)₄.
The structure is composed of chains of octahedra formed by oxygen atoms and hydroxyl groups linked with copper atoms, and there are two types of non-equivalent copper atoms having different coordination.

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Abnormal optical properties of babingtonite from the Yakuki mine, Japan, are described. Sections cut nearly normal to each of the optic axes of this mineral show no extinction. This is probably due to elliptic vibration of light which passes through the sections. Dependence of the ellipticity on the orientation of the section was determined. Interference figure exhibited by sections cut nearly normal to one of the optic axes is anomalous, especially remarkable for red light. The mineral absorbs light of different colour in different amount. Dependence of the optical density on the wave lengths of light is shown by variation curves.

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