Zobrazeno 1 - 10
of 151
pro vyhledávání: '"John Rakovan"'
Publikováno v:
Minerals, Vol 10, Iss 3, p 244 (2020)
The purpose of this work is to evaluate the long-term effects of radiation on the structure of naturally occurring apatite in the hope of assessing its potential for use as a solid nuclear waste form for actinide sequestration over geologically relev
Externí odkaz:
https://doaj.org/article/cab26015be9c43208c97a7d86d979955
Autor:
John Rakovan
Publikováno v:
Rocks & Minerals. 98:99-101
Autor:
John Rakovan
Publikováno v:
Rocks & Minerals. 97:36-47
Autor:
Cullen Laughlin-Yurs, Travis A. Olds, Anthony R. Kampf, Owen P. Mills, John Rakovan, Peter C. Burns
Publikováno v:
American Mineralogist. 106:922-929
Hydroxylpyromorphite, Pb5(PO4)3(OH), has been documented in the literature as a synthetic and naturally occurring phase for some time but has not previously been formally described as a mineral. It is fully described here for the first time using cry
Autor:
John Rakovan
Publikováno v:
Rocks & Minerals. 96:20-23
All photographs by the author of specimens from his collectionActivator (Luminescence Center): Fluorescence occurs when an electron that resides in a higher energy orbital (excited state) of an ato...
Publikováno v:
Geochimica et Cosmochimica Acta. 289:1-13
The results obtained from carefully designed experiments with the lead carbonate–lead apatite system presented in the study are used to propose a general model for the development of microstructures upon polycrystalline pseudomorphic transformation
Autor:
J. Alex Speer, John Rakovan
Publikováno v:
Rocks & Minerals. 94:493-496
Editor's note: We are pleased to welcome John Rakovan and J. Alex Speer as guest coauthors for this issue's Chips from the Quarry.This year is the Centennial Anniversary of the Mineralogical Societ...
Autor:
Mickey E. Gunter, John Rakovan
Publikováno v:
Rocks & Minerals. 94:404-407
The year 2019 is an important one for the Mineralogical Society of America (MSA) and Dr. J. Alexander Speer, MSA executive director. It is the one-hundredth anniversary of the society, it is Speer'...
Publikováno v:
Geology. 47:617-621
Re-emerging Treasures: Yellow Quartz from Cabiche, Municipal de Quípama, Boyacá Department, Colombia
Publikováno v:
Rocks & Minerals. 94:240-249
All specimen photography by Eddie Rivera Surrounded by jungle in the mining region of Boyaca, Colombia, amidst mandarin and avocado trees is the small town of Cabiche. Locally recognized for its fa...