Alphabetical Listing for P

• Pailhe N, Wattiaux A, Gaudon M, Demourgues A (2008) Correlation between structural features and vis–NIR spectra of a-Fe2O3 hematite and AFe2O4 spinel oxides (A ¼ Mg, Zn). Journal of Solid State Chemistry 181, 1040–1047.
• Palanza V, Chiodini N, Galli A, Lorenzi R, Moretti F, Paleari A, Spinolo G (2010) Updating of the interpretation of the optical absorption and emission of Verneuil synthetic and natural metamorphic blue sapphire: the role of V2+, V3+ and Cr2+. 11th European Conference on Defects. IOP Conference Series 15, 012087.
• Palanza V, Galli A, Lorenzi R, Moretti F,  Mozzati MC, Paleari A, Spinolo G (2010) Luminescence study of transition metal ions in natural magmatic and metamorphic yellow sapphires.  11th European Conference on Defects. IOP Conference Series 15.
• Palke A (2023) Exceptionally Large Synthetic Rutile. Gems & Gemology 59, 81-82.
• Palke AC, Renfro ND, Hapeman JR, Berg RB (2023) Gemological Characterization of Montana Sapphire From the Secondary Deposits at Rock Creek, Missouri RIver, and Dry Cottonwood Creek. Gems & Gemology 59, 2-45.
• Pancharatnam S (1954) On the pleochroism of amethyst quartz and its absorption spectra. Proceedings of the Indian Academy of Science 40 A, l96-210.
• Pant DD (1950) Analysis of the absorption bands of the uranyl salts. Proceedings - Indian Academy of Sciences, Section A 31A, 35-41.
• Paralusz S (2001) Maxixe-type green-blue beryls with eye-visible pleochroism. Gems and Gemology 37:225-227
• Pardieu V, Sangsawong S, Cornuz L, Raynaud V, Luetrakulprawat (2020) Update on Emeralds from the Mananjary-Irondro Area, Madagcascar. The Journal of Gemmology 37, 416-425.
• Parkin KM, Loeffler BM, Burns RG (1977) Mossbauer Spectra of kyanite, aquamarine, and cordierite showing intervalence charge transfer.  Physics and Chemistry of Minerals 1,  301–311
• Parkin KM, Burns RG (1980) High temperature crystal field spectra of transition metal-bearing minerals: relevance to remote-sensed spectra of planetary surfaces. Proc. 11th Lunar Planet. Sci Conf., Suppl. 12, Geochim. Cosmochim. Acta 1, 731-755.
• Partlow EP, Cohen AJ (1986) Optical studies of biaxial Al-related color centers in smoky quartz. Amer Mineral 71, 589-598.
• Peng M, Zheng C, Lu W, Zou Z (1985) [A spectroscopic study of cassiterites from four types of tin deposits in China.] Mineral Deposits 4:69-76. (in Chinese)
• Peng SS, Chen TH, Chen JJ (2008) Investigation on the local structure, optical absorption spectra of malachite and azurite. Guisuanyan Tongbao 27, 1040-1043, 1047. (In Chinese)
  
• Percival MJL (1990) Optical absorption spectroscopy of doped materials: the P2₁3-P2₁2₁2₁ phase transition in K2(Cd0.98Co0.02)2(SO4)3. Mineralogical Magazine 54, 525-536.
  
• Perekalina ZB, Khomyakov AP (1999) Diffuse reflection spectra of some titanosilicate minerals. Kristallografiya 44, 139-142. In Russian.
• Peretti A, Schmetzer K, Bernhardt HJ, Mouawad F (1995) Rubies from Mong Hsu. Gems & Gemology 31, 2-26.
• Petrusenko S, Taran MN, Platonov AN, Gavorkyan SV (1992) Optical and infrared spectroscopic studies of epidote group minerals from the Rhodope region.Spisanie na Bulgarskoto Geologichesko Druzhestvo 53, 1-9.  (In Russian)
• Petrov I, Berdesinski W (1975) Untersuchung künstlich farbveränderter blauer Topase. Z. Dt. Gemmol. Ges. 24:16-19.
• Petrov I (1977) Farbeuntersuchungen an Topas. Neus Jb Mineral Abh 130:288-302.
• Petrov I, Schmetzer K, Eysel HH (1977) Absorptionsspektren von Chrom in Topas. N Jb Mineral Monat 365-372
• Petrov I (1978) Farbe, Farbursachen and Garbveränderung bei Topasen. Z. Dt. Gemmol. Ges. 27:1-11.
• Petrov I (1983): Anwendung physikalischer Methoden zur Lösung kristallchemischer Probleme. Paramagnetische Zentren in Topas – Kristallchemische Klassifikation natürlicherTopase durch Korrelation ihrer optischen Absorptions- EPR- und TL-Spektren. Dissertation. Naturwissenschaftlich-Mathematische Gesamtfakultät der Ruprecht-Karl-Universität Heidelberg.
• Petrov I (1990) Role of natural radiation in tourmaline coloration: Discussion. American Mineralogist 75, 237-239.
• Petrov I, Mineeva RM, Bershov LV, Andreas A (1993) EPR of [Pb-Pb]3+ mixed valence pairs in amazonite-type microcline. American Mineralogist 78, 500-510.
• Petrushenko S, Matsyuk SS, Platonov AN (1988) Typification of kyanites based on their optical spectra and color. Geokhim Mineral Petrol 24:18-27 (in Russian)
• Petrusenko SI, Taran MN, Platonov AN, Gevorkyan SV (1992) The investigation of minerals of the epidote group from the deposits of Rhodopy’s area by methods of optical and infrared spectroscopy. Review of the Bulgarian Geological Society 58:1-9 (in Russian)
• Phlayrahan A, Monarumit N, Lhuaamporn T, Satikune S, Wathanakul P (2019) Spectroscopic investigation of properties of blue sapphire samples depending on heating conditions. Journal of Applied Spectroscopy, Vol. 86, No. 5, November, 2019 (Russian Original Vol. 86, No. 5, September–October, 2019)
• Phichaikamjornwut B, Pongkrapan S, Intarasiri S, Bootkul D (2019) Conclusive comparison of gamma irradiation and heat treatment for color enhancement of Rubellite from Mozambique. Vibrational Spectroscopy 103, 102926.
  
• Phillips WR, Talantsev AS (1996) Russian demantoid, czar of the garnet family. Gems & Gemology 32:100-111
• Phyu KM, Zaw K, Mernagh TP, Aung TZ (2021) Characterisation and Genesis of Sapphires from the Yenya-U Area, Thabeikkyin Township, Mandalay Region, Myanmar. The Journal of Gemmology 37, 802-815.
• Pinheiro MVB, Basílio MS, Krambrock K, Dantas MSS, Paniago, R, Assunção, AL, Pedrosa-Soares AC (2000) The cause of colour of the blue alexandrites from Malacacheta, Minas Gerais, Brazil. J Gemmology 27:161-170
• Pinto LCB, Righi A (2011) Origin of the color in cobalt-doped quartz. Physics and Chemistry of Minerals 38:623–629.
• Pisarev RV, Druzhinin  VV, Prochorova SD, Nesterova NN, Andreeva GT (1969) Crystal Field Theory and Optical Absorption of Cobalt and Nickel Boracites. phys stat sol 35, 145-155.
• Pisutha-Arnond V, Häger T, Wathanakul P, Atichat W (2004) Yellow and brown coloration in beryllium-treated sapphires. J Gemmology 30:77-104.
• Pitt GD, Tozer DC (1970) Optical absorption measurements on natural and synthetic ferromagnesian minerals subjected to high pressures, Phys Earth Planet Interiors 2:179-188
• Pizani PS, Terrile MC, Farach HA, Poole CP (1985) Color centers in sodalite. Amer Mineral 70:1186-1192
  

• Platonov AN, Belichenko VP (1964) Color and thermoluminescence of the Volhynia topazes. Mineralogicheskii Sbornik (Lvov) 18, 412-21. In Russian
• Platonov AN, Belichenko VP (1965) Nature of color of cancrinites from the Azov area. Mineralogicheskii Sbornik (Lvov) 19, 153-63. (In Russian)
• Platonov AN, Belichenko VP (1965) Pink-smoky color of Volhynian topazes. Morfol., Svoistav i Genezis Mineralov, Akad. Nauk Ukr. SSR 1965,69-84. In Russian
• Platonov AN; Belichenko VP (1966) Spectrophotometric study of sodalite from the Azov area. Geol. Zh., Akad. Nauk Ukr. RSR, 26:110-14 (in Ukrainian)
• Platonov AN, Marfunin AS (1968) Optical Absorption spectra of sphalerites. Geochemistry International USSR 5, 245- (In Russian)
• Platonov AN, Marfunin AS (1968) Optical absorption spectra of sphalerites. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva97, 257-72. (In Russian)
• Platonov AN, Tarashchan AN, Belichenko VP, Povarenniykh AS (1969) Spectroscopic investigation of sulfur in natural hauyne. Mineralogicheskii Sbornik (Lvov), 23(3), 311-14. in Russian.
• Platonov AN; Belichenko VP; Tarashchan AM; Ziya-Zada AK; Povarennikh OS (1971) Color of Badakhshan lazurites. Dopovidi Akademii Nauk Ukrains'koi RSR, Seriya B: Geologiya, Geofizika, Khimiya ta Biologiya 33: 904-8 (in Ukrainian)
• Platonov AN, Krasilshchikova OA, Tarashchan AN (1971) Color centers in apatites. Konstitutsiya i Svoistva Mineralov 7, 64-75. In Russian
• Platonov AN, Marfunin AS (1971) Isomorphous replacements in sphalerites based on spectroscopic data. Vinogradov AP ed. Probl. Izomorfnykh Zameshchenii At. Krist., 268-81. (In Russian)
• Platonov AN, Tarashchan AN, Belichenko VP, Povarennykh AS (1971) Spectroscopic study of sulphide sulphur in some framework aluminosilicates. Konst Svoistva Mineralov (Constitution and Properties of Minerals) 5:61-72 (in Russian)
• Platonov AN. Tarashchan AN. Povarennykh AS. Zakharova GM (1971) Optical spectroscopy of vanadium in natural minerals.  I.  Optical absorption spectra of natural orthovanadates. Konstitutsiya i Svoistva Mineralov 5, 92-100. (In Russian).
• Platonov AN, Polshin EV, Gevorkyan SV, Tarashchan AN (1972) Spectroscopic study of ferrimolybdite. Konstitutsiya i Svoistva Mineralov 6, 62-6. (In Russian)
• Platonov AN, Polshin EV, Tarashchan AV, Vorobev IB (1972) Moessbauer and optical spectroscopy of iron in some natural phosphates. Mineralogicheskii Sbornik (Lvov) 26, 257-68. (In Russian)
• Platonov AN, Povarennykh AS, Tarashchan AN, Bondar VV (1972) Color of uranyl-bearing minerals. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva 101, 423-8. (In Russian)
• Platonov AN, Povarennykh AS, Tarashchan AN, Bondar VV (1972) Color of uranyl-bearing minerals. Doklady Akademii Nauk SSSR 209, 929-932.In Russian
  
• Platonov AN, Povarennykh AS, Tarashchan, AN Bondar VV (1972) Effect of crystal chemical factors on the optical absorption spectra of uranyl ion in minerals. Mineralogicheskii Sbornik (Lvov) 26, 393-398. (In Russian)
  
• Platonov AN, Tarashchan AN, Povarennykh AS (1972) Optical spectroscopy of vanadium in natural minerals.  II.  Optical absorption spectra of vanadates with complex radicals. Konstitutsiya i Svoistva Mineralov 6, 58-62. (In Russian)
  
• Platonov AN, Krasilshchikova OA, Tarashchan AN, (1973) Color centers in apatites. Konstitutsiya i Svoistva Mineralov 7:64-75
• Platonov AN, Tarashchan AN (1973) Optical absorption of tetrahedral complexes of chromium in some minerals with apatite structure. Doklady Akademii Nauk SSSR 209, 929-32. (In Russian)
• Platonov AN, Tarashchan AN (1973) Optical spectroscopy of vanadium in natural minerals. III. Absorption spectra of vanadium(4+) and vanadium(3+) complexes. Konstitutsiya i Svoistva Mineralov 7, 75-81. In Russian
• Platonov AN, Belichenko VP, Nikolskaya LV, Polshin EV (1975) On the coloration of nephrites. Konstitutsiya i Svoistva Mineralov 9, 52-58. In Russian
• Platonov AN, Krasilshchikova OA, Tarashchan AN, (1975) Optical absorption of rare earth ions in minerals. Konstitutsiya i Svoistva Mineralov 9:58-64. (in Russian).
• Platonov AN (1976) The nature of colour in minerals. Kiev, Naukova Dumka (in Russian).
• Platonov AN (1976) Typomorphic value of the color of minerals. Abakumova NB editor. Fiz. Miner. Probl. Tipomorfizma, Mater. Vses. Konf. (1976), 31-9 (In Russian).
• Platonov AN, Taran MN, Kharkiv AD, Botkunov AU, Bukanov VV (1976) The investigations of colour of gem peridotes from deposites of USSR. Constitution and Properties of Minerals 11:41-49 (in Russian)
• Platonov AN, Taran MN, Kharkiv AD, Polshin EV, Botkunov AU (1976) Colour of gem garnets from Yakutian kimberlite pipes. Constitution and Properties of Minerals 10:26-37 (in Russian)
• Platonov AN, Taran MN, Kharkiv AD, Povarennich AS (1976) On "alexandtite" colour of garnets. Dokl. AN UkSSR 8:692-695 (in Russian)
• Platonov AN, Taran MN, Kharkiv AD, Povarennykh AS (1976)  "Alexandrite" color of garnets. Dopovidi Akademii Nauk Ukrainskoi RSR, Seriya B: Geologichni, Khimichni ta Biologichni Nauki (1976), (8), 694-8. In Ukrainian
• Platonov AN, Tarran, MN (1977) Some problems of the optical spectroscopy of gem stones. Lazarenko EK ed. Vopr. Reg. Genet. Mineral., [S'ezde Ukr. Mineral. O-va.], 2nd (1977), 11-21 (In Russian).
• Platonov AN, Taran MN, Kharkiv AD, Botkunov AI, Bukanov VV (1977) Color characteristics of jewelry-grade chrysolites from the USSR deposits. Konstitutsiya i Svoistva Mineralov 11, 41-49. In Russian
• Platonov AN, Taran MN, Kharkiv AD, Polshin EV, Botkunov AI  (1976) Color of jewelry garnets made from kimberlite tubes of Yakutia. Konstitutsiya i Svoistva Mineralov 10, 26-37. In Russian
• Platonov AN, Dorfman MD, Taran MN, Taraschan AN (1978) Spectroscopic investigation of emeralds from various deposites. Konstitutsiya i Svoistva Mineralov 12, 115-121 (in Russian)
• Platonov AN, Taran MN, Minko OE, Polshyn EV (1978) Optical absorption spectra and nature of color of iron-containing beryls (A) Physics and Chemistry of Minerals 4,87-88.
  
• Platonov AN, Polshin EV, Taran MN (1979) On types of iron in beryls. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva 6:725-730 (in Russian)
• Platonov AN, Taran MN, Polshin EV, Minko OE (1979) On nature of colour of iron-bearing beryls. Izvestiya Akademii Nauk SSSR. Seriya Geologicheskaya 10:54-68 (in Russian)
• Platonov AN, Shuriga TN, Ginsburg AI, Polshin EV, Taran MN (1979) On an example of evolution of colouration of beryls in a process of formation of the deposit. Constitution and Properties of Minerals 13:32-41 (in Russian)
• Platonov AN, Taran MN, Taraschan AN (1980) On new kinds and investigation of colour of gem materials. In: Gems and Coloured Stones. Moscow, Nauka, 199-211 (in Russian)
• Platonov AN, Polshin ZV, Tsistlyakova MV, Taran MN (1981) ОБ изоморфные железа в Бацци из пегматитов казахстана (About isomorphism of iron in bazzites from pegmatitres of Kazakhstan). Geochemistry 3, 393-398.
• Platonov AN, Taran MN (1982) On isomorphism of iron in beryls from granitic pegmatites of Kent massif (Central Kazahstan). In: New Data on Minerals. Moscow, Nedra, 131-134 (in Russian)
• Platonov AN, Khomenko VM, Belichenko VP (1984) Optical absorption spectra of vanadium diopside; lavrovite. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva 1984, 724-727. (in Russian)
• Platonov AN, Taran MN, Balitsky V (1984) природа окраски самоцветов (The nature of the color of gems) 197 pages. Moscow, Nedra (in Russian)
• Platonov AN, Tarashchan AN, Taran MN (1984) Color centers in amazonites. Mineralogicheskiy Zhurnal 6:3-16 (in Russian)
• Platonov AN, Taran MN, Sobolev NV, Matsuk SS, Specius ZV (1985) Optical absorption spectra and the color of natural specimens of chromium-containing kyanite. Mineralogichesky Zhurnal 7:22-30. (in Russian)
• Platonov AN, Taran MN, Klyakhin VA (1989) On two colour types of Mn3+-bearing beryls. Zeitschrift der Deutschen. Gemmologischen Gesellschaft 38, 147-154.
• Platonov AN, Taran MN, Platonova EA (1989) A new type of irradiative colour of green microclines. Doklady Akademii Nauk Ukrainskoi SSR, Seriya B:  Geologicheskie, Khimicheskie i Biologicheskie Nauki 3: 16-20. (in Russian)
  
• Platonov AN, Langer K, Matsuk SS Taran MN, Hu X (1991) Fe2+ -Ti4+ charge-transfer in garnets from mantle eclogites. European Journal of Mineralogy 3, 19-26.
• Platonov AN, Sakhanbinskiy M, Ignatov SI, Vrublevskiy P (1991) Natural prasiolite from the Lower Silesia (Poland). Doklady Akad Nauk Ukrain SSR 1991:112-116 (in Russian)
• Platonov AN, Sakhanbinskiy M, Vrublevskiy P, Ignatov SI (1991) Rare varieties of green quartz from the quartz-agate geodes in Lower Silesia, Poland, Mineralogicheskiy Zhurnal, 13:10-17 (in Ukranian)
• Platonov AN, Sachanbinski M, Wrobleski P, Ignatov SI (1992) Natural prasiolite from Lower Silesia, Poland, Zeitschrift der Deutschen Gemmologischen Gesellschaft 41, p. 21–27.
• Platonov AN, Taran MN, Matsyuk SS (1993) Optical spectrum of Cr3+ ions in vesuvianite. Mineralogicheskiy Zhurnal 15: 55-59 (in Russian)
• Platonov AN, Tarashchan AN, Langer K (1993) New data about spectroscopic properties of Cr3+ ions in kyanite. Mineralogichesky Zhurnal 15:12-21 (in Russian)
• Platonov AN, Mozgova NN (1974) Effect of crystal-chemical features on the forbidden band gap energy of complex sulfides (sulfo salts). Izvestiya Akademii Nauk SSSR, Seriya Geologicheskaya (1974), (2), 71-79. (In Russian)
  
• Platonov AN, Langer K, Wieviora A, Andrut M (1995) Electronic absorption spectra of chromium-bearing amesite. European Journal of Mineralogy 7, 961-965.
• Platonov AN, Zabinski W, Sachabinski M (1995) Optical absorption spectra of Mn3+ ions in vesuvianites from Lower Silesia, Poland. Eur J Mineral 7:1345-1352. Also: Mineralogicheskii Zhurnal 17:38-47 (in Russian)
• Platonov AN, Langer K, Andrut M, Calas G (1996) Cr3+ in phyllosilicates: Influence of the nature of coordinating ligands and their next cationic neighbors on the crystal field parameters. Mineral Spectroscopy: A tribute to Roger G. Burns. The Geochemical Society, Special Publication No. 5. Dyar MD and Schaefer MW eds, pp 41-48
• Platonov AN, Sachanbinski M, Szujszkiewicz A, Sedenko VS (1998) Purple-red colour of quartz caused by piemontite inclusions. Zeitschrift Dt Gemmol Ges 47. 193-198.
  
• Platonov AN, Tarashchan AN, Langer K, Andrut M, Partzsch G, Matsyuk SS (1998) Electronic absorption and luminescence studies of kyanite single crystals: differentiation between excitation of FeTi charge transfer and Cr3+ dd transitions. Physics and Chemistry of Minerals 25, 203-212.
• Platonov AN, Tarashchan AN, Krassilshchikova OA (2000) Some problems in application of spectroscopic methods for study of admixtures of 3dN ions locations in real minerals. Mineralogicheskii Zhurnal 22:50-56
• Platonov AN, Platonova EA, Geleta OL (2000) Optical spectroscopic and colorimetric investigation of rock-forming microcline with iron oxide microinclusions. Mineralogicheskii Ahurnal 22:3-7
• Platonov AN, Langer K, Chopin C, Andrut M Taran MN (2000) Fe2+-Ti4+ charge-transfer in dumortierite. European Journal of Mineral. 12, 521-528.
• Platonov AN, Langer K, Wildner M, Polshin EV, Matsyuk SS (2001) The crystal chemistry of the humite minerals: spectroscopic studies and structure refinement of an unusual iron-rich clinohumnite. Zeitschrift Kristallogr 216:154-164
• Platonov AN (2005) Origin of the color of rock-forming feldspars. Mineralogichnii Zhurnal 27:90-101 (in Russian)
• Platonov AN, Shuriga TN (2005) Otpical spectra and color of muscovites from rare-metal deposits. Mineralogichnii Zhurnal 27:73-80 (in Russian)
• Platonov AN, Matsyuk SS, Simonenko KV (2007) Crystal chemistry and spectroscopy of Cr3+ ions in green garnets from mantle wehrlites. Mineralogichnii Zhurnal 29, 25-38. In Russian
• Platonov AN, Langer K, Matsyuk SS (2008) Crystal field and covalency of octahedral chromium in natural [8](Mg1−x Ca x ) [6]3(Al0.67Cr0.33)2Si3O12 garnets from upper mantle rocks. Physics and Chemistry of Minerals 35, 331–337.
• Platonov AN, Khomenko VM, Langer K, Matsyuk SS (2010) Electronic spectroscopy evidence of compensatory replacement VIMgIVSi-> VI(Al,Cr3+)IVAl in mantle enstatites. Mineralogical Journal (Ukranine) 32, 3-9.
• Platonov AN, Kravchenko GL (2010) Optical spectroscopic study of ferroan chlorites from metasomatically alterated rocks in western Peri-Azovian area. Mneralogical journal (Ukraine) 32: 27-37 (in Ukranian).
• Platonov AN, Urusov VS, Langer K (2011) A remark on correlation between relaxation parameters and covalence of Cr3+-O bonds in some mineral structures. Mineralogichnii Zhurnal 33, 49-52.
• Platonov AN, Khomenko VM, Tarashchan AN (2012) Crystallochemistry and spectroscopy of manganese ions in mica. Mineralogical Journal (Ukraine) 34, 3-21. (In Ukranian)
• Platonov AN, Kupriyanova II, Taran MN (2012) Fe-bearing beryls: isomorphic series, crystal chemistry of Fe ions, optical absorption spectra and their typomorphic significance. Mineralogichnii Zhurnal 34, 81-93. In Russian
• Platonov AN, Khomenko VM, Tarashchan A (2013) Оптическая спектроскопия и люминесценция породообразующих слюд и хлоритов [Optical spectroscopy and luminescence of rock-forming micas and chlorites] Kiev, Naukova Dumka. 297 pages.
• Platonov AN, Khomenko VM, Taran Mn (2016) Crystal chemistry, optical spectra and color of beryl. I. Heliodor and golden beryl – two varieties of natural yellow beryl. Mineralogical Journal (Ukraine) 38, 3–14. (in Russian).
• Platonov AN, Taran AN (2018) Optical Spectra and Color of Natural Garnets. National Academy of Sciences of Ukraine, Kyiv, Naukova Dumka. 256 pages. (In Russian)
  

• Pluthametwisute T, Wanthanachaisaeng B, Saiyasombat C, Sutthirat C (2020) Cause of color modification in tanzanite after heat treatment. Molecules 25, 3743.
• Plyusnin GS (1969) Color of amazonites. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva 98, 3-17. (in Russian)
• Pol'shin EV, Platonov AN, Borutskii BE, Taran MN, Gevork'yan SV, Men'shikov YP, Litvin MA, Belichenko VP (1987) New data on eudialyte-group minerals. Mineralogicheskii Zhurnal 9:36-48 (in Russian)
• Pol’shin EV, Platonov AN, Borutzky BE, Taran MN, Rastsvetaeva RK (1991) Optical and Mössbauer study of minerals in the eudialyte group. Phys Chem Mineral 18:117-125
• Ponnusamy V, Ramasamy V, Dheenathayalu M (2003) Kinetics of thermoluminescent calcite. Indian Journal of Pure and Applied Physics 41(8), 621-626.
  
• Ponnusamy V, Ramasamy V, Dheenathayalu M, Hemalatha J (2004) Effect of annealing in thermostimulated luminescence (TSL) on natural blue color calcite crystals. Nuclear Instruments & Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms 217(4), 611-620.
  
• Ponnusamy V, Ramasamy V, Hemalatha J (2004) Thermostimulated luminescence (tsl) - thermal treatment in blue coloured calcite crystals. Indian Journal of Pure and Applied Physics 42 130-135
  
• Popper P (1951) Transmission of natural and synthetic mica in the ultra-violet. Nature 168, 1119-1120
  
• Povarennykh AS, Platonov AN, Belichenko VP (1970) On the colour of ussingite from the Ilimaussaq (South Greenland) and Lovozero (Kola Peninsula) alkaline intrusions. Bulletin of the Geological Society of Denmark 20, 20-26.
• Povarennykh AS, Platonov AN, Tarashchan AN, Belichenko VP (1971) The color and luminescence of tugtupite (beryllosodalite) from Ilimaussaq, South Greenland. Meddelelsev om Gronland 181:1-12
• Powell RC, Xi L, Gang X, Quarles GJ (1985) Spectroscopic properties of alexandrite crystals. Physical Review B 32, 2788-2797.
• Prameena B, Anbalagan G, Gunasekaran S, Ramkumaar GR, Gowtham B (2014) Structural, optical, electron paramagnetic, thermal and dielectric characterization of chalcopyrite. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 122, 348-355.    
• Price DC, Vance ER, Smith G, Edgar A, Dickson BL (1976) Mössbauer effect studies of beryl. J Physique 12:C6-811 - C6-817
• Price J (2022) Large Green and Yellow Diamonds Colored by Nickel Impurities. Gems & Gemology 58, 50-51.       
  
• Pribavkin SV, Votyakov SL (2004) Amazonite-​bearing pegmatites of Shartash massif (central Urals)​: mineralogy, petrogenesis.Zapiski Vserossiiskogo Mineralogicheskogo Obshchestva 133, 10-20. (In Russian)
• Priest V, Cowan DL, Reichel DG, Ross FK (1990) A dangling-silicon-bond defect in topaz. Journal of Applied Physics 68, 3035-3037.
• Promwongnan S, Ounorn P, Maneekrajangsaeng M, Leelawatanasuk T (2017) An unusual blue synthetic star spinel. The Journal of Gemmology 35, 500-502.       
  
• Promwongnan S, Sutthirat C (2019) An update on mineral inclusions and their composition in ruby from the Bo Rai gem field in Trat Province, eastern Thailand. The Journal of Gemmology 36, 634-645.       
  
• Promwongan S, Pisutha-Arnond V, Atichat W, Leelawathanasuk T, Suphanan C (2022) Inclusions and spectroscopic features of yellowish green enstatite. Gems & Gmology 58, 120-125.  
  
• Pryce MHL, Runciman WA (1958) The absorption spectrum of vanadium corundum. Discussions of the Faraday Society 26, 34–42.       
  
• Przibram K. (1953) Verfärbung und Lumineszenz. Beiträge zur Mineralphysik. Springer-Verlag, Wien.54   
  
• Przbram K (1954) Irradiation colours in minerals. Endeavour 37-41
• Putnis A, Hinrichs R, Putnis CV, Golla-Schindler U, Collins LG (2007) Hematite in porous red-clouded feldspars: Evidence of large-scale crustal fluid–rock interaction. Lithos 95, 10-18/