Manual of the Mineralogy of Great Britain and Ireland |
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Page 19
... Prismatic ; primary form a four - sided pyramid , with a rhombic base . Occurs crystallized , massive , disseminated , and investing other minerals . Cleavage imperfect ; fracture conchoidal , un- even . Lustre shining and resinous ...
... Prismatic ; primary form a four - sided pyramid , with a rhombic base . Occurs crystallized , massive , disseminated , and investing other minerals . Cleavage imperfect ; fracture conchoidal , un- even . Lustre shining and resinous ...
Page 25
... Prismatic . Primary form a right rhombic prism of 105 ° , whose base is to its height in the proportion of 1 to 3. White , translucent to transparent . Lustre vitreous . H. 3 . Contains , according to Wollaston , fluorine and aluminium ...
... Prismatic . Primary form a right rhombic prism of 105 ° , whose base is to its height in the proportion of 1 to 3. White , translucent to transparent . Lustre vitreous . H. 3 . Contains , according to Wollaston , fluorine and aluminium ...
Page 28
... Prismatic . Primary form a right rhombic prism of 116 ° 10 ′ . Has one very distinct cleavage . Fracture conchoidal to uneven . Lustre vitreous , inclining to resinous on surface of fracture . Transparent to translucent . Colourless ...
... Prismatic . Primary form a right rhombic prism of 116 ° 10 ′ . Has one very distinct cleavage . Fracture conchoidal to uneven . Lustre vitreous , inclining to resinous on surface of fracture . Transparent to translucent . Colourless ...
Page 34
... prismatic , and pyramidal , or metastatic . The rhombohedrons , of which no less than 41 have been already observed , are divided into obtuse and acute . As many as 85 distinct scalenohedrons have been noticed ; but only 7 hexagonal ...
... prismatic , and pyramidal , or metastatic . The rhombohedrons , of which no less than 41 have been already observed , are divided into obtuse and acute . As many as 85 distinct scalenohedrons have been noticed ; but only 7 hexagonal ...
Page 46
... Prismatic . Primary form a right rhombic prism . Cleavage distinct , parallel to M , less so to a and i . Crystals nearly , if not always compound ; the re - entering angles , however , are not always discernible , except in very ...
... Prismatic . Primary form a right rhombic prism . Cleavage distinct , parallel to M , less so to a and i . Crystals nearly , if not always compound ; the re - entering angles , however , are not always discernible , except in very ...
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Common terms and phrases
acicular Alumina amygdaloid analcime Analyses antimony arsenic acid Austell barytes Beudant bismuth blowpipe borax Botallack Brittle Brooke and Miller brown calcite Camborne carbonate cavities chabasite charcoal Cleavage coal cobalt colour colourless conchoidal Cornwall crystalline crystals Cumberland decomposed Devonshire earthy edges felspar fibrous flame fluor form of figure formula Fracture conchoidal Fracture uneven fuses galena granite granular green grey Gwennap Haidinger Hausmann Hauy Heddle Hill Huel hydrochloric acid intumescence Ireland Isle Kobell Leadhills lime LOCALITIES.-England locality Lustre vitreous Magnesia manganese masses massive matrass mineral mines Naumann oblique occurs opaque oxide oxide of copper oxide of lead parallel pearly perfect Peroxide of iron Phillips potash Primary form Prismatic Protoxide of iron pseudomorphous pyrites quartz Rammelsberg Redruth resinous Rhombohedral right rhombic prism rocks silica silver Skye soda soluble sometimes species specimens Streak white Strontian sulphuric acid Tavistock Thomson translucent transparent twinned variety Wheal Wicklow yellow
Popular passages
Page 485 - Eggs in this edition are from different specimens to those figured in the previous editions. Systematic Catalogue of the Eggs of British Birds, arranged with a View to supersede the use of Labels for Eggs. By the Rev. SC MALAN, MA, MAS On writing-paper. 8vo, 8s. 6d.
Page 485 - Natural History of the Sperm Whale, and a Sketch of a South Sea Whaling Voyage. By THOMAS BEALE.