The Relationship Between Cadwaladerite Al(OH)2Cl∙4H2O and Lesukite Al2(OH)5Cl∙2H2O as Investigated by SEM, PXRD, FTIR and Raman Spectroscopy

Cadwaladerite (Al(OH)2Cl∙4H2O) collected from Cerro Pintados, Chile described by Gordon in 1941 is designated as “doubtful” by the IMA. Material collected from the same locality in 2015 resembling the description of cadwaladerite gave a powder XRD pattern similar to lesukite (Al2(OH)5Cl∙2H2O). However, Gordon provided no X-ray data for his material from Cerro Pintados. In order to determine whether cadwaladerite and lesukite are the same mineral species, measurements were made on a suite of samples from various localities. A portion of the material collected by Gordon in 1941 was also obtained from the Mineralogical Museum of Harvard University. Type material of lesukite from a fumarolic environment at the Tolbachik Fissure in Kamchatka, Russia was obtained as well as lesukite from the Maria Mine, Chile (Arica Province) and a previously undescribed locality for lesukite (Barranaca del Sulfato, Mejillones Peninsula, Antofagasta Province). All samples are yellow to yellow-orange in colour and all exhibit small cubic crystals (up to 50µm), even Gordon’s cadwaladerite which was thought to be amorphous. The Chilean samples are all associated with halite and sometimes with anhydrite. These five samples were studied by SEM, FTIR, powder XRD, and Raman spectroscopy. A ratio of Al:Cl less than or equal to 1.3:1 was observed for all the samples, including measurements made on lesukite from the Russian locality Vergasova et al. studied in 1997, and determined to have a 2:1 ratio. SEM-EDS analyses also show all samples to have minor iron substitution, as well as copper substitution in two samples. FTIR spectra are very similar for all samples. Raman spectroscopy done on both samples collected in Cerro Pintados and the Russian lesukite gave similar spectra. Powder XRD analyses on all samples showed spectra identified to be lesukite, including Gordon’s cadwaladerite. Crystal cell parameters calculated from powder XRD ranged from 19.778Å to 19.878Å. Results using modern instrumental techniques confirm Gordon’s cadwaladerite, collected in 1939 and described in 1941, and lesukite are the same mineral species.

Pantáta Bezoušek : o jeho radostech i starostech /

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Laska a smrt; tragedie o pěti jednáních.

At head of title: Dramaticka díla Jaroslava Vrchlického. XVIII.

Confiteor-- /

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Vida y milagros de la gloriosa Santa Catherina de Sena /

Parecer del maestro fray Vic[n]te Iustiniano Antist ... a cerca de las ima- [sic] de Sancta Catherina de Sena. Historia de la vida y milagros de Santa Ynes de Montepoliciano ... / por Diego Mas, comienzan en h. 318 y 335.

Fukyū ruihō /

By order of Shogun Yoshimune, Hayashi Ryōteki and Niwa Seihaku, medical doctors of the Tokugawa shogunate, compiled prescriptions according to illnesses using citations from Tokugawa's medical books, in which famous titles, such as Materia medica of Li Zi zhen (Ben cao gong mu) and Formulations for emergency (Zhou hou jiu zu fang) by Ge Hong, are included.

Kullīyāt-i Shahīd.

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Princezna Pampeliška : pohádka.

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[Shintei] Ikkyū shokoku monogatari /

"Ima kokoni osametaru wa, Hirata Shisui shū, Minamoto Motosada hosei ni te Tenpō 7-nen no shuppan ni kakaritaru Ikkū shokoku monogatari zue to, Monamoto Motosada shūi, Kōka 3-nen no shuppan ni kakareru Ikkyū shokoku monogatari zue shūi to o awashitaru mono nari" kaidai yori.

Listi inu Evangelji, vʹ nedele, inu prasnike zeliga lejta, pod milostvim, visoko vrednim gospodam gospodam Augustinam, tri in dvajsetim shkofam lublanskim, pregledani, in med ludi dani, po dovoljenju vishih.

Bound as issued with Sveti postni Evangelji za vsah dan vʹ postu.

Zapiski o Shamili︠e︡ /

Photocopy.

Dějiny kroje v zemích českých /

Each volume has also special t. p.

[Majmūʻat rasāʾil] [microform] /

"Risālah fī ithbāt al-najāh wa-al-imān" by ʻAlī al-Dāghistānī: 8 p. at end.

Vinařstvi. Pěstování vinné révy ve vinicích i na zd̕ich a výroba vín. Treti vydáni znovu preparcoval Jindřich Fort.

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