Investigations on boron-rich tourmaline with the formula NaAl3Al6(Si3B3O18)(BO3)3(OH)3(OH)

Andreas Ertl; A. Rosa; Jeffrey E Post; Rainer Abart

Investigations on boron-rich tourmaline with the formula NaAl₃Al₆(Si₃B₃O₁₈)(BO₃)₃(OH)₃(OH)

Andreas Ertl (Corresponding author)
, A. Rosa
, Jeffrey E Post
, Rainer Abart

Publications: Contribution to journal › Meeting abstract/Conference paper › Peer Reviewed

Abstract

Recently, ertlite, NaAl3Al6(Si4B2O18)(BO3)3(OH)3O, a new mineral species of the tourmaline supergroup was described by CEMPÍREK et al. (2025). This is the first tourmaline in which boron (B) occurs in the endmember formula. Ertlite was described from two localities. The Brichest tourmaline sample exhibits lattice parameters of a = 15.590(2), c = 7.009(1) Å, and an empirical formula of ~(Na0.74Ca0.110.15)(Al2.84Li0.15Fe0.01)Al6.00(Si4.05B1.95O18)(BO3)3(OH)3 [O0.72(OH)0.24F0.04]. Here, we describe an even more B-rich tourmaline with the approximate formula NaAl3Al6(Si3B3O18)(BO3)3(OH)3(OH).

Original language	English
Pages (from-to)	74
Number of pages	1
Journal	Mitteilungen der Österreichischen Mineralogischen Gesellschaft
Volume	171
Issue number	2025
Publication status	Published - 2025
Event	MinPet 2025: From Fundamental Research to Applications in Industry - Montanuniversität Leoben, Leoben, Austria Duration: 21 Sept 2025 → 23 Sept 2025 https://www.unileoben.ac.at/minpet-leoben/

Funding

This study was funded in part by the Austrian Science Fund (FWF) project P35585.

Austrian Fields of Science 2012

105116 Mineralogy
105113 Crystallography

Cite this

@article{472d448387a9458ca32fc5b54f40bfcc,

title = "Investigations on boron-rich tourmaline with the formula NaAl3Al6(Si3B3O18)(BO3)3(OH)3(OH)",

abstract = "Recently, ertlite, NaAl3Al6(Si4B2O18)(BO3)3(OH)3O, a new mineral species of the tourmaline supergroup was described by CEMP{\'I}REK et al. (2025). This is the first tourmaline in which boron (B) occurs in the endmember formula. Ertlite was described from two localities. The Brichest tourmaline sample exhibits lattice parameters of a = 15.590(2), c = 7.009(1) {\AA}, and an empirical formula of \textasciitilde{}(Na0.74Ca0.110.15)(Al2.84Li0.15Fe0.01)Al6.00(Si4.05B1.95O18)(BO3)3(OH)3 [O0.72(OH)0.24F0.04]. Here, we describe an even more B-rich tourmaline with the approximate formula NaAl3Al6(Si3B3O18)(BO3)3(OH)3(OH).",

author = "Andreas Ertl and A. Rosa and Post, \{Jeffrey E\} and Rainer Abart",

year = "2025",

language = "English",

volume = "171",

pages = "74",

journal = "Mitteilungen der {\"O}sterreichischen Mineralogischen Gesellschaft",

issn = "1609-0144",

number = "2025",

note = "MinPet 2025 : From Fundamental Research to Applications in Industry, MinPet 2025 ; Conference date: 21-09-2025 Through 23-09-2025",

url = "https://www.unileoben.ac.at/minpet-leoben/",

}

TY - JOUR

T1 - Investigations on boron-rich tourmaline with the formula NaAl3Al6(Si3B3O18)(BO3)3(OH)3(OH)

AU - Ertl, Andreas

AU - Rosa, A.

AU - Post, Jeffrey E

AU - Abart, Rainer

PY - 2025

Y1 - 2025

N2 - Recently, ertlite, NaAl3Al6(Si4B2O18)(BO3)3(OH)3O, a new mineral species of the tourmaline supergroup was described by CEMPÍREK et al. (2025). This is the first tourmaline in which boron (B) occurs in the endmember formula. Ertlite was described from two localities. The Brichest tourmaline sample exhibits lattice parameters of a = 15.590(2), c = 7.009(1) Å, and an empirical formula of ~(Na0.74Ca0.110.15)(Al2.84Li0.15Fe0.01)Al6.00(Si4.05B1.95O18)(BO3)3(OH)3 [O0.72(OH)0.24F0.04]. Here, we describe an even more B-rich tourmaline with the approximate formula NaAl3Al6(Si3B3O18)(BO3)3(OH)3(OH).

AB - Recently, ertlite, NaAl3Al6(Si4B2O18)(BO3)3(OH)3O, a new mineral species of the tourmaline supergroup was described by CEMPÍREK et al. (2025). This is the first tourmaline in which boron (B) occurs in the endmember formula. Ertlite was described from two localities. The Brichest tourmaline sample exhibits lattice parameters of a = 15.590(2), c = 7.009(1) Å, and an empirical formula of ~(Na0.74Ca0.110.15)(Al2.84Li0.15Fe0.01)Al6.00(Si4.05B1.95O18)(BO3)3(OH)3 [O0.72(OH)0.24F0.04]. Here, we describe an even more B-rich tourmaline with the approximate formula NaAl3Al6(Si3B3O18)(BO3)3(OH)3(OH).

UR - https://www.uibk.ac.at/media/filer_public/b3/6d/b36dfc79-480c-4ffe-9356-06ceb033e178/4_minpet25_abstracts.pdf

M3 - Meeting abstract/Conference paper

SN - 1609-0144

VL - 171

SP - 74

JO - Mitteilungen der Österreichischen Mineralogischen Gesellschaft

JF - Mitteilungen der Österreichischen Mineralogischen Gesellschaft

IS - 2025

T2 - MinPet 2025

Y2 - 21 September 2025 through 23 September 2025

ER -

Investigations on boron-rich tourmaline with the formula NaAl3Al6(Si3B3O18)(BO3)3(OH)3(OH)

Abstract

Funding

Austrian Fields of Science 2012

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Cite this

Investigations on boron-rich tourmaline with the formula NaAl₃Al₆(Si₃B₃O₁₈)(BO₃)₃(OH)₃(OH)