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Little Joe No. 2 Adit (Little Joe II; Joe 2), Stewart Mine (MS 6162; Stewart Lithia), Tourmaline Queen Mountain (Pala; Queen), Pala District, San Diego Co., California, USA

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The Little Joe No. 2[1] is an adit driven southwesterly into the Stewart pegmatite for several hundred feet using mechanized haulage to develop a series of inclined room and pillar crosscuts that encountered several major pockets containing gem quality crystals of fine rubellite, morganite, and kunzite; associated with accessory minerals such as lepidolite, quartz, and montmorillonite. The adit was originally a short exploratory drift developed by the American Lithia and Chemical Company circa 1907, which was reported to have produced light pink kunzite and some gem tourmaline. These workings were later widened and extended further down dip between the late 1980's and early 90's. The adit and underground workings are located on the patented Stewart mine property. Elevation approx. 1069' AMSL.

Footnote:
1.The adit was named in honor of the fictional character Little Joe Cartwright, from the popular American television series "Bonanza", a Western themed show which aired on NBC from 1959 to 1973.



References:
Merrill, F. J. H. 1914. Geology and Mineral Resources of San Diego and Imperial Counties: Gems, Lithia Minerals. California State Mining Bureau, San Francisco, Cal. California State Printing Office, December. Chapter 1, pages 61-110.

Sheppard, J. B. 2008. History of the surface prospects and underground mining developments made along the northern portion of the Stewart pegmatite; personal communication with Scott L. Ritchie, SDMC. June/July.





 Map Reference: 33°23'0"N , 117°3'44"W

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Mineral List:
  		•  Albite
    Na[AlSi
     
    3
    		O
     
    8
    		]
    Reference: [Sheppard, J. B. 2008. History of the surface prospects and underground mining developments made along the northern portion of the Stewart pegmatite; personal communication with Scott L. Ritchie, SDMC. June/July.]
  		•  Albite
    var: Cleavelandite
    Reference: [Sheppard, J. B. 2008. History of the surface prospects and underground mining developments made along the northern portion of the Stewart pegmatite; personal communication with Scott L. Ritchie, SDMC. June/July.]
  		•  'Albite-Anorthite Series'
    Reference: [Sheppard, J. B. 2008. History of the surface prospects and underground mining developments made along the northern portion of the Stewart pegmatite; personal communication with Scott L. Ritchie, SDMC. June/July.]
  		•  Almandine
    Fe
    2+
    3
    		Al
     
    2
    		[SiO
     
    4
    		]
     
    3
    Reference: [Sheppard, J. B. 2008. History of the surface prospects and underground mining developments made along the northern portion of the Stewart pegmatite; personal communication with Scott L. Ritchie, SDMC. June/July.]
  		•  Biotite
    Reference: [Sheppard, J. B. 2008. History of the surface prospects and underground mining developments made along the northern portion of the Stewart pegmatite; personal communication with Scott L. Ritchie, SDMC. June/July.]
  		•  Elbaite
    [Na][(Li,Al)
     
    3
    		][Al
     
    6
    		][(OH)
     
    3
    		|OH|(BO
     
    3
    		)
     
    3
    		|Si
     
    6
    		O
     
    18
    		]
    Reference: [Sheppard, J. B. 2008. History of the surface prospects and underground mining developments made along the northern portion of the Stewart pegmatite; personal communication with Scott L. Ritchie, SDMC. June/July.]
    Site Photo
    Little Joe No. 2 Adit (Little Joe II; Joe 2), Stewart Mine (MS 6162; Stewart Lithia), Tourmaline Queen Mountain (Pala; Queen), Pala District, San Diego Co., California, USA
    © Rob Lavinsky
  		•  'Feldspar Group'
    Reference: [Sheppard, J. B. 2008. History of the surface prospects and underground mining developments made along the northern portion of the Stewart pegmatite; personal communication with Scott L. Ritchie, SDMC. June/July.]
  		•  'Garnet Group'
    X
     
    3
    		Z
     
    2
    		(TO
     
    4
    		)
     
    3
    		 (X = Ca, Fe, etc·, Z = Al, Cr, etc·, T = Si, As, V)
    Reference: [Sheppard, J. B. 2008. History of the surface prospects and underground mining developments made along the northern portion of the Stewart pegmatite; personal communication with Scott L. Ritchie, SDMC. June/July.]
  		•  Kaolinite
    Al
     
    2
    		Si
     
    2
    		O
     
    5
    		(OH)
     
    4
    Reference: [Sheppard, J. B. 2008. History of the surface prospects and underground mining developments made along the northern portion of the Stewart pegmatite; personal communication with Scott L. Ritchie, SDMC. June/July.]
  		•  Lepidolite
    Reference: [Sheppard, J. B. 2008. History of the surface prospects and underground mining developments made along the northern portion of the Stewart pegmatite; personal communication with Scott L. Ritchie, SDMC. June/July.]
  		•  Lithiophilite
    LiMn
    2+
     
    		[PO
     
    4
    		]
    Reference: [Sheppard, J. B. 2008. History of the surface prospects and underground mining developments made along the northern portion of the Stewart pegmatite; personal communication with Scott L. Ritchie, SDMC. June/July.]
  		•  'Mica Group'
    Reference: [Sheppard, J. B. 2008. History of the surface prospects and underground mining developments made along the northern portion of the Stewart pegmatite; personal communication with Scott L. Ritchie, SDMC. June/July.]
  		•  Microcline
    K[AlSi
     
    3
    		O
     
    8
    		]
    Reference: [Sheppard, J. B. 2008. History of the surface prospects and underground mining developments made along the northern portion of the Stewart pegmatite; personal communication with Scott L. Ritchie, SDMC. June/July.]
  		•  Montmorillonite
    (Na,Ca)
     
    0.33
    		(Al,Mg)
     
    2
    		Si
     
    4
    		O
     
    10
    		(OH)
     
    2
    		·nH
     
    2
    		O
    Reference: [Sheppard, J. B. 2008. History of the surface prospects and underground mining developments made along the northern portion of the Stewart pegmatite; personal communication with Scott L. Ritchie, SDMC. June/July.]
  		•  Muscovite
    KAl
     
    2
    		[(OH)
     
    2
    		|AlSi
     
    3
    		O
     
    10
    		]
    Reference: [Sheppard, J. B. 2008. History of the surface prospects and underground mining developments made along the northern portion of the Stewart pegmatite; personal communication with Scott L. Ritchie, SDMC. June/July.]
  		•  Quartz
    SiO
     
    2
    Reference: [Sheppard, J. B. 2008. History of the surface prospects and underground mining developments made along the northern portion of the Stewart pegmatite; personal communication with Scott L. Ritchie, SDMC. June/July.]
  		•  Schorl
    [Na][Fe
    2+
    3
    		][Al
     
    6
    		][(OH)
     
    3
    		|OH|(BO
     
    3
    		)
     
    3
    		|Si
     
    6
    		O
     
    18
    		]
    Reference: [Sheppard, J. B. 2008. History of the surface prospects and underground mining developments made along the northern portion of the Stewart pegmatite; personal communication with Scott L. Ritchie, SDMC. June/July.]
  		•  Spessartine
    Mn
    2+
    3
    		Al
     
    2
    		[SiO
     
    4
    		]
     
    3
    Reference: [Sheppard, J. B. 2008. History of the surface prospects and underground mining developments made along the northern portion of the Stewart pegmatite; personal communication with Scott L. Ritchie, SDMC. June/July.]
  		•  Spodumene
    LiAl[Si
     
    2
    		O
     
    6
    		]
    Reference: [Sheppard, J. B. 2008. History of the surface prospects and underground mining developments made along the northern portion of the Stewart pegmatite; personal communication with Scott L. Ritchie, SDMC. June/July.]
  		•  Spodumene
    var: Kunzite
    Reference: [Sheppard, J. B. 2008. History of the surface prospects and underground mining developments made along the northern portion of the Stewart pegmatite; personal communication with Scott L. Ritchie, SDMC. June/July.]
  		•  'Tourmaline'
    AD
     
    3
    		G
     
    6
    		(BO
     
    3
    		)
     
    3
    		[T
     
    6
    		O
     
    18
    		]Y
     
    3
    		Z
    Reference: [Sheppard, J. B. 2008. History of the surface prospects and underground mining developments made along the northern portion of the Stewart pegmatite; personal communication with Scott L. Ritchie, SDMC. June/July.]
  		•  'Tourmaline
    var: Indicolite'
    Reference: [Sheppard, J. B. 2008. History of the surface prospects and underground mining developments made along the northern portion of the Stewart pegmatite; personal communication with Scott L. Ritchie, SDMC. June/July.]
  		•  'Tourmaline
    var: Rubellite'
    Reference: [Sheppard, J. B. 2008. History of the surface prospects and underground mining developments made along the northern portion of the Stewart pegmatite; personal communication with Scott L. Ritchie, SDMC. June/July.]
  		•  'Tourmaline
    var: Verdelite'
    Reference: [Sheppard, J. B. 2008. History of the surface prospects and underground mining developments made along the northern portion of the Stewart pegmatite; personal communication with Scott L. Ritchie, SDMC. June/July.]


    24 entries listed. 12 valid minerals.

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