"Gmelinite" is a word in ENGLISH
A rhombohedral zeolitic mineral, related in form and
composition to chabazite.
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A mineral occuring in glassy rhombohedral crystals, varying, in color from white to yellow or red. It is essentially a …
Read the complete definitionCalcium carbonate, or carbonate of lime. It is rhombohedral in its crystallization, and thus distinguished from aragonite. It includes common …
Read the complete definitionAn important ore of iron, the sesquioxide, so called because of the red color of the powder. It occurs in …
Read the complete definitionAn ocher-yellow mineral occurring on minute rhombohedral crystals. It is a hydrous sulphate of iron and potash.
Read the complete definitionNative magnesium carbonate occurring in white compact or granular masses, and also in rhombohedral crystals.
Read the complete definitionAn iron-black or steel-gray mineral, consisting chiefly of the oxides of iron and titanium. It is commonly massive, but occurs …
Read the complete definitionA glassy colorless mineral occurring in rhombohedral crystals, sometimes used as a gem. It is a silicate of glucina, and …
Read the complete definitionA sulphide of arsenic and silver of a beautiful cochineal-red color, occurring in rhombohedral crystals, and also massive; ruby silver.
Read the complete definitionRuby silver; dark red silver ore. It is a sulphide of antimony and silver, occurring in rhombohedral crystals or massive, …
Read the complete definitionManganese carbonate, a rose-red mineral sometimes occuring crystallized, but generally massive with rhombohedral cleavage like calcite; -- called also dialogite.
Read the complete definitionRelated to the rhombohedron; presenting the form of a rhombohedron, or a form derivable from a rhombohedron; relating to a …
Read the complete definitionRhombohedral.
Read the complete definitionA pyramidal form under the rhombohedral system, inclosed by twelve faces, each a scalene triangle.
Read the complete definitionCarbonate of iron, an important ore of iron occuring generally in cleavable masses, but also in rhombohedral crystals. It is …
Read the complete definitionA mineral occurring usually in three-sided or six-sided prisms terminated by rhombohedral or scalenohedral planes. Black tourmaline (schorl) is the …
Read the complete definition