Description: Raman spectroscopy indicated that the garnets found at this mine are predominately almandine, but had some pyrope and spessartine components (as are essentially all schist and gneiss-hosted almandines in New England). Analysis done by EDXRF showed a high amount of iron (not surprising), then manganese and minor amounts of calcium (Williams and Williams, 2014). Crystals to about 1 cm.

ⓘ Dravite

Formula: NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)

Locality: Red Embers Mine (Two Fat Guys Mine), Erving, Franklin County, Massachusetts, USA

Habit: elongated prisms

Colour: dark brown to black

Description: thin, elongated crystals to 1 cm or so. Identified by a "Connecticut university" according to Wilson (2014).

References:

Wilson, Jeff (2014). "Garnet from Red Embers Mine, Erving MA" article posted at http://www.minerals.net/news/ September 11, 2014.

ⓘ Graphite

Formula: C

Localities:

Red Embers Mine (Two Fat Guys Mine), Erving, Franklin County, Massachusetts, USA
Erving, Franklin County, Massachusetts, USA

Description: The host matrix for the garnets is a graphite-bearing mica schist or phyllite. See http://www.mindat.org/forum.php?read,7,357206,357206,page=1#msg-357206

ⓘ Quartz

Formula: SiO₂

References:

Cristofono, Peter (n.d.) Personal communication.

ⓘ Staurolite

Formula: Fe²⁺₂Al₉Si₄O₂₃(OH)

References:

Cristofono, Peter (n.d.) Personal communication.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘ	Graphite	1.CB.05a	C
Group 4 - Oxides and Hydroxides
ⓘ	Quartz	4.DA.05	SiO₂
Group 9 - Silicates
ⓘ	Almandine	9.AD.25	Fe²⁺₃Al₂(SiO₄)₃
ⓘ	Staurolite	9.AF.30	Fe²⁺₂Al₉Si₄O₂₃(OH)
ⓘ	Dravite	9.CK.05	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Dravite	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
H	ⓘ Staurolite	Fe₂²⁺Al₉Si₄O₂₃(OH)
B	Boron
B	ⓘ Dravite	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
C	Carbon
C	ⓘ Graphite	C
O	Oxygen
O	ⓘ Almandine	Fe₃²⁺Al₂(SiO₄)₃
O	ⓘ Dravite	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
O	ⓘ Quartz	SiO₂
O	ⓘ Staurolite	Fe₂²⁺Al₉Si₄O₂₃(OH)
Na	Sodium
Na	ⓘ Dravite	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Mg	Magnesium
Mg	ⓘ Dravite	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Al	Aluminium
Al	ⓘ Almandine	Fe₃²⁺Al₂(SiO₄)₃
Al	ⓘ Dravite	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Al	ⓘ Staurolite	Fe₂²⁺Al₉Si₄O₂₃(OH)
Si	Silicon
Si	ⓘ Almandine	Fe₃²⁺Al₂(SiO₄)₃
Si	ⓘ Dravite	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Si	ⓘ Quartz	SiO₂
Si	ⓘ Staurolite	Fe₂²⁺Al₉Si₄O₂₃(OH)
Fe	Iron
Fe	ⓘ Almandine	Fe₃²⁺Al₂(SiO₄)₃
Fe	ⓘ Staurolite	Fe₂²⁺Al₉Si₄O₂₃(OH)

Fossils

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Other Databases

Wikipedia:	https://en.wikipedia.org/wiki/Erving,_Massachusetts
Wikidata ID:	Q1530814
GeoNames ID:	4935939

Localities in this Region

USA

Massachusetts
- Franklin County
  - Erving
    - Red Embers Mine (Two Fat Guys Mine)

Other Regions, Features and Areas that Intersect

North AmericaContinent

North America PlateTectonic Plate

Ganderia DomainDomain
GranderiaPassive Margin

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