*** Primary Characterization Data ***

Pedon ID: S1977TX047002

( Brooks, Texas )

Print Date: Dec 4 2024 3:34AM

Sampled as on Dec 6, 1977:	Falfurrias ; Mixed, hyperthermic Typic Ustipsamment
Revised to correlated:	FALFURRIAS ; Mixed, hyperthermic Typic Ustipsamments

				United States Department of Agriculture
SSL	-	Project	CP78TX089   SOUTH TEXAS SAND SHEET	Natural Resources Conservation Service
	-	Site ID	S1977TX047002   Lat: 27° 11' 10.00" north  Long: 98° 18' 12.01" west  MLRA: 83C	National Soil Survey Center
	-	Pedon No.	78P0206	Soil Survey Laboratory
	-	General Methods 1B1A, 2A1, 2B		Lincoln, Nebraska 68508-3866

---

Layer	Horizon	Orig Hzn	Depth (cm)	Field Label 1	Field Label 2	Field Label 3	Field Texture	Lab Texture
78P01034	A1	A11	0-8					FS
78P01035	A2	A12	8-23					FS
78P01036	A3	A13	23-38					FS
78P01037	A5	A14	38-63					FS
78P01038			63-109					FS
78P01039	E1	A2	109-153					FS
78P01040	E2	A2	153-216					FS
78P01041	Bt1	B21t	216-231					FSL
78P01042	Bt2	B22t	231-256					SCL
78P01043	Bt3	B23t	261-315					SCL
78P01044	Bt4	B24t	322-330					SCL
78P01045	Bt5	B25t	330-361					SCL
78P01046	Bt6	B26t	361-378					SCL
78P01047	Bt7	B27t	378-391					SCL
78P01048	Bt8	B28t	391-421					FSL

---

Pedon Calculations
Calculation Name	Result	Units of Measure
CEC Activity, CEC7/Clay, Weighted Average	0.35	(NA)
Clay, carbonate free, Weighted Average	4	% wt
Weighted Particles, 0.1-75mm, 75 mm Base	83	% wt
Volume, >2mm, Weighted Average	0	% vol
Clay, total, Weighted Average	4	% wt
Weighted averages based on control section: 25-100 cm

*** Primary Characterization Data ***

Pedon ID: S1977TX047002

( Brooks, Texas )

Print Date: Dec 4 2024 3:34AM

Sampled As	:	Falfurrias		Mixed, hyperthermic Typic Ustipsamment
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  78P0206

---

PSDA  &  Rock Fragments				-1-	-2-	-3-	-4-	-5-	-6-	-7-	-8-	-9-	-10-	-11-	-12-	-13-	-14-	-15-	-16-	-17-	-18-
					(- - - - - Total - - - - - -)			(- - Clay - - -)		(- - - - Silt - - - - -)		(- - - - - - - - - - - - Sand - - - - - - - - - - - -)					( Rock Fragments   (mm) )
				Lab	Clay	Silt	Sand	Fine	CO3	Fine	Coarse	VF	F	M	C	VC	(- - - - - - - - Weight - - - - - - - -)				>2 mm
				Text-	<	.002	.05	<	<	.002	.02	.05	.10	.25	.5	1	2	5	20	.1-	wt %
	Depth			ure	.002	-.05	-2	.0002	.002	-.02	-.05	-.10	-.25	-.50	-1	-2	-5	-20	-75	75	whole
Layer	(cm)	Horz	Prep		(- - - - - - - - - - - - - - - - - - - - - - - - - - % of <2mm Mineral Soil - - - - - - - - - - - - - - - - - - - - - - - - - - -)												(- - - - - - - % of <75mm - - - - - -)				soil
				3A1a1a	3A1a1a	3A1a1a	3A1a1a	3A1a1a		3A1a1a	3A1a1a	3A1a1a	3A1a1a	3A1a1a	3A1a1a	3A1a1a	3B1	3B1	3B1
78P01034	0-8	A1	S	fs	2.0	2.0	96.0			tr	2.0	14.4	79.3	2.1	0.2	tr	--	--	--	82	--
78P01035	8-23	A2	S	fs	3.6	0.6	95.8			tr	0.6	13.6	80.8	1.3	0.1	--	--	--	--	82	--
78P01036	23-38	A3	S	fs	3.6	0.2	96.2			tr	0.2	13.3	81.0	1.8	0.1	--	--	--	--	83	--
78P01037	38-63	A5	S	fs	4.8	--	96.0			tr	--	14.4	80.0	1.5	0.1	--	--	--	--	82	--
78P01038	63-109		S	fs	2.8	0.9	96.3			tr	0.9	12.5	82.2	1.5	0.1	--	--	--	--	84	--
78P01039	109-153	E1	S	fs	2.6	0.6	96.8			tr	0.6	14.2	81.1	1.4	0.1	--	--	--	--	83	--
78P01040	153-216	E2	S	fs	2.4	1.1	96.5			tr	1.1	14.0	81.2	1.2	0.1	--	--	--	--	83	--
78P01041	216-231	Bt1	S	fsl	13.8	5.1	81.1	10.9		0.8	4.3	14.6	64.2	2.3	tr	tr	--	--	--	67	--
78P01042	231-256	Bt2	S	scl	30.0	4.0	66.0	26.3		0.8	3.2	10.9	52.4	2.7	tr	tr	--	--	--	55	--
78P01043	261-315	Bt3	S	scl	32.2	3.1	64.7	28.9		--	3.1	11.1	51.4	2.2	tr	tr	--	--	--	54	--
78P01044	322-330	Bt4	S	scl	28.4	4.5	67.1	25.1		1.2	3.3	12.9	51.2	3.0	tr	tr	--	--	--	54	--
78P01045	330-361	Bt5	S	scl	27.1	5.9	67.0	23.0		1.2	4.7	13.7	50.8	2.5	tr	tr	--	--	--	53	--
78P01046	361-378	Bt6	S	scl	22.9	7.9	69.2	20.9		1.2	6.7	12.4	54.4	2.4	tr	tr	--	--	--	57	--
78P01047	378-391	Bt7	S	scl	20.9	6.3	72.8	18.4		1.6	4.7	14.7	55.9	2.2	tr	tr	--	--	--	58	--
78P01048	391-421	Bt8	S	fsl	18.0	7.4	74.6	16.3		2.4	5.0	15.2	56.7	2.7	tr	--	--	--	--	59	--

*** Primary Characterization Data ***

Pedon ID: S1977TX047002

( Brooks, Texas )

Print Date: Dec 4 2024 3:34AM

Sampled As	:	Falfurrias		Mixed, hyperthermic Typic Ustipsamment
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  78P0206

---

Bulk Density  &  Moisture				-1-	-2-	-3-	-4-	-5-	-6-	-7-	-8-	-9-	-10-	-11-	-12-	-13-	-14-
				(Bulk Density)		Cole	(- - - - - - - - - - - Water Content - - - - - - - - - - -)					( Air Dry-Oven Dry )		WRD	Aggst
				33	Oven	Whole	6	10	33	1500	1500 kPa	(- - - - Ratio - - - -)		Whole	Stabl	(- - Ratio/Clay - -)
	Depth			kPa	Dry	Soil	kPa	kPa	kPa	kPa	Moist		Corrected	Soil	2-0.5mm	CEC7	1500 kPa
Layer	(cm)	Horz	Prep	(- - - g cm-3 - - -)			(- - - - - - - - - - - - pct of < 2mm - - - - - - - - - - - -)							cm3 cm-3	%
				4A1d	4A1h			4B1c	4B1c	3C2a1a		3D1		4C1		8D1	8D1
78P01034	0-8	A1	S							1.1		1.001				0.90	0.55
78P01035	8-23	A2	S	1.54	1.55	0.002			3.2	0.8		1.001		0.04		0.42	0.22
78P01036	23-38	A3	S	1.47	1.50	0.007			5.8	0.9		1.001		0.07		0.36	0.25
78P01037	38-63	A5	S	1.52	1.52	--			5.5	0.8		1.001		0.07		0.27	0.17
78P01038	63-109		S	1.55	1.58	0.006			6.8	0.7		1.001		0.09		0.39	0.25
78P01039	109-153	E1	S	1.50	1.52	0.004		5.2	5.3	0.4		1.000		0.07		0.35	0.15
78P01040	153-216	E2	S	1.53	1.53	--		4.0	4.0	0.4		1.001		0.06		0.29	0.17
78P01041	216-231	Bt1	S	1.68	1.76	0.016		18.2	14.2	5.5		1.008		0.15		0.45	0.40
78P01042	231-256	Bt2	S							12.2						0.55	0.41
78P01043	261-315	Bt3	S							16.0		1.026				0.58	0.50
78P01044	322-330	Bt4	S							14.2		1.024				0.61	0.50
78P01045	330-361	Bt5	S							14.3		1.024				0.63	0.53
78P01046	361-378	Bt6	S							11.8		1.020				0.63	0.52
78P01047	378-391	Bt7	S							10.4		1.018				0.62	0.50
78P01048	391-421	Bt8	S							9.1		1.016				0.66	0.51

---

Water Content				-1-	-2-	-3-	-4-	-5-	-6-	-7-	-8-	-9-	-10-	-11-	-12-	-13-
				(- - Atterberg - -)		(- - - - - Bulk Density - - - - -)			(- - - - - - - - - - - - - - - - - - - - - - - Water Content - - - - - - - - - - - - - - - - - - - - -)
				(- - - Limits - - -)		Field	Recon	Recon	Field	Recon	(- - - - - - - - - - - - - - Sieved Samples - - - - - - - - - - - - -)
				LL	PI		33	Oven		33	6	10	33	100	200	500
	Depth						kPa	Dry		kPa	kPa	kPa	kPa	kPa	kPa	kPa
Layer	(cm)	Horz	Prep	pct <0.4mm		(- - - - - - - - g cm-3 - - - - - - -)			(- - - - - - - - - - - - - - - - - - - - - - - % of < 2mm - - - - - - - - - - - - - - - - - - - - - -)
				4F1	4F							3C1b1a
78P01035	8-23	A2	S									3.8
78P01036	23-38	A3	S									3.5
78P01037	38-63	A5	S									2.8
78P01038	63-109		S									3.4
78P01039	109-153	E1	S									2.9
78P01040	153-216	E2	S									3.9
78P01042	231-256	Bt2	S	39	22

*** Primary Characterization Data ***

Pedon ID: S1977TX047002

( Brooks, Texas )

Print Date: Dec 4 2024 3:34AM

Sampled As	:	Falfurrias		Mixed, hyperthermic Typic Ustipsamment
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  78P0206

---

Carbon  &  Extractions				-1-	-2-	-3-	-4-	-5-	-6-	-7-	-8-	-9-	-10-	-11-	-12-	-13-	-14-	-15-	-16-	-17-	-18-	-19-
				(- - - - - Total - - - - -)			Est	OC	C/N	(- - - Dith-Cit Ext - - -)			(- - - - - - Ammonium Oxalate Extraction - - - - - -)						(- - - Na Pyro-Phosphate - - -)
	Depth			C	N	S	OC	(WB)	Ratio	Fe	Al	Mn	Al+½Fe	ODOE	Fe	Al	Si	Mn	C	Fe	Al	Mn
Layer	(cm)	Horz	Prep	(- - - - - - - - - - % of <2 mm - - - - - - - - - -)						(- - - - - - - - - - - - - - - - - - - % of < 2mm - - - - - - - - - - - - - - - - -)								mg kg-1	(- - - - - - % of < 2mm - - - - -)
								6A1c		6C2b
78P01034	0-8	A1	S					0.32		0.1
78P01035	8-23	A2	S					0.16		0.1
78P01036	23-38	A3	S					0.09		0.1
78P01037	38-63	A5	S					0.07		0.1
78P01038	63-109		S					0.04		0.1
78P01039	109-153	E1	S					0.02		0.1
78P01040	153-216	E2	S					0.02		0.1
78P01041	216-231	Bt1	S					0.07		0.2
78P01042	231-256	Bt2	S					0.07		0.4
78P01043	261-315	Bt3	S					0.04		0.2
78P01044	322-330	Bt4	S					0.04		0.2
78P01045	330-361	Bt5	S					0.03		0.2
78P01046	361-378	Bt6	S					0.03		0.2
78P01047	378-391	Bt7	S					0.03		0.2
78P01048	391-421	Bt8	S					0.03		0.2

*** Primary Characterization Data ***

Pedon ID: S1977TX047002

( Brooks, Texas )

Print Date: Dec 4 2024 3:34AM

Sampled As	:	Falfurrias		Mixed, hyperthermic Typic Ustipsamment
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  78P0206

---

CEC  &  Bases				-1-	-2-	-3-	-4-	-5-	-6-	-7-	-8-	-9-	-10-	-11-	-12-	-13-	-14-
				(- - - - - - NH4OAC Extractable Bases - - - - -)								CEC8	CEC7	ECEC		(- - - - Base - - - -)
								Sum	Acid-	Extr	KCl	Sum	NH4	Bases	Al	(- Saturation -)
	Depth			Ca	Mg	Na	K	Bases	ity	Al	Mn	Cats	OAC	+Al	Sat	Sum	NH4OAC
Layer	(cm)	Horz	Prep	(- - - - - - - - - - - - - - - - - cmol(+) kg-1 - - - - - - - - - - - - - - - - - - -)							mg kg-1	(- - - - cmol(+) kg-1 - - -)			(- - - - - - - - % - - - - - - - -)
				6N2e	6O2d	6P2b	6Q2b		6H2b			5A3a	5A8a			5C3	5C1
78P01034	0-8	A1	S	1.2*	0.3	0.1	0.2	1.8	--			1.8	1.8			100	100
78P01035	8-23	A2	S	0.8	0.2	0.1	0.1	1.2	--			1.2	1.5			100	80
78P01036	23-38	A3	S	0.7	0.2	0.1	0.1	1.1	--			1.1	1.3			100	85
78P01037	38-63	A5	S	0.7	0.2	0.1	0.1	1.1	--			1.1	1.3			100	85
78P01038	63-109		S	0.5	0.2	0.1	0.1	0.9	--			0.9	1.1			100	82
78P01039	109-153	E1	S	0.3	0.1	0.1	0.1	0.6	--			0.6	0.9			100	67
78P01040	153-216	E2	S	0.3	0.1	tr	0.1	0.5	--			0.5	0.7			100	71
78P01041	216-231	Bt1	S	2.1	1.9	0.2	0.3	4.5	2.3			6.8	6.2			66	73
78P01042	231-256	Bt2	S	6.4	5.8	0.4	0.7	13.3	4.0			17.3	16.5			77	81
78P01043	261-315	Bt3	S	7.7	6.8	0.5	0.9	15.9	3.3			19.2	18.6			83	85
78P01044	322-330	Bt4	S	7.4	6.6	0.5	0.8	15.3	2.2			17.5	17.3			87	88
78P01045	330-361	Bt5	S	7.5	6.2	0.5	0.7	14.9	1.5			16.4	17.1			91	87
78P01046	361-378	Bt6	S	6.4	5.3	0.4	0.7	12.8	1.4			14.2	14.4			90	89
78P01047	378-391	Bt7	S	5.9	4.7	0.4	0.6	11.6	1.2			12.8	12.9			91	90
78P01048	391-421	Bt8	S	5.5	4.2	0.3	0.6	10.6	0.9			11.5	11.8			92	90

^*Extractable Ca may contain Ca from calcium carbonate or gypsum., CEC7 base saturation set to 100.

*** Primary Characterization Data ***

Pedon ID: S1977TX047002

( Brooks, Texas )

Print Date: Dec 4 2024 3:34AM

Sampled As	:	Falfurrias		Mixed, hyperthermic Typic Ustipsamment
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  78P0206

---

Salt				-1-	-2-	-3-	-4-	-5-	-6-	-7-	-8-	-9-	-10-	-11-	-12-	-13-	-14-	-15-	-16-	-17-	-18-	-19-	-20-
				(- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Water Extracted From Saturated Paste - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -)																	1:2
																			Total	Elec	Elec	Exch
	Depth			Ca	Mg	Na	K	CO3	HCO3	F	Cl	PO4	Br	OAC	SO4	NO2	NO3	H2O	Salts	Cond	Cond	Na	SAR
Layer	(cm)	Horz	Prep	(- - - - - mmol(+) L-1 - - - - -)				(- - - - - - - - - - - - - - - - - - - - - - mmol(-) L-1 - - - - - - - - - - - - - - - - - - - -)										(- - - - % - - - -)		(- - dS m-1 - -)		%
																			8D5	8A1a
78P01034	0-8	A1	S																tr	0.06		6
78P01035	8-23	A2	S																tr	0.04		7
78P01036	23-38	A3	S																tr	0.02		8
78P01037	38-63	A5	S																tr	0.02		8
78P01038	63-109		S																tr	0.01		9
78P01039	109-153	E1	S																tr	0.01		11
78P01040	153-216	E2	S																tr	0.01		--
78P01041	216-231	Bt1	S																tr	0.02		3
78P01042	231-256	Bt2	S																tr	0.03		2
78P01043	261-315	Bt3	S																tr	0.04		3
78P01044	322-330	Bt4	S																tr	0.06		3
78P01045	330-361	Bt5	S																tr	0.09		3
78P01046	361-378	Bt6	S																tr	0.09		3
78P01047	378-391	Bt7	S																tr	0.16		3
78P01048	391-421	Bt8	S																tr	0.15		3

*** Primary Characterization Data ***

Pedon ID: S1977TX047002

( Brooks, Texas )

Print Date: Dec 4 2024 3:34AM

Sampled As	:	Falfurrias		Mixed, hyperthermic Typic Ustipsamment
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  78P0206

---

pH  &  Carbonates				-1-	-2-	-3-	-4-	-5-	-6-	-7-	-8-	-9-	-10-	-11-
				(- - - - - - - - - - - - - - - - - - pH - - - - - - - - - - - - - - - - -)						(- - Carbonate - -)		(- - Gypsum - - -)
					CaCl2					As CaCO3		As CaSO4*2H2O		Resist
	Depth				0.01M	H2O	Sat			<2mm	<20mm	<2mm	<20mm	ohms
Layer	(cm)	Horz	Prep	KCl	1:2	1:1	Paste	Oxid	NaF	(- - - - - - - - - - - - % - - - - - - - - - - -)				cm-1
					8C1e	8C1a
78P01034	0-8	A1	S		5.8	6.3
78P01035	8-23	A2	S		5.6	6.2
78P01036	23-38	A3	S		5.5	6.1
78P01037	38-63	A5	S		5.4	6.1
78P01038	63-109		S		5.3	6.0
78P01039	109-153	E1	S		5.2	5.8
78P01040	153-216	E2	S		4.9	5.5
78P01041	216-231	Bt1	S		4.6	5.5
78P01042	231-256	Bt2	S		4.9	5.9
78P01043	261-315	Bt3	S		5.2	5.7
78P01044	322-330	Bt4	S		5.4	6.2
78P01045	330-361	Bt5	S		5.5	6.2
78P01046	361-378	Bt6	S		5.5	6.0
78P01047	378-391	Bt7	S		5.5	5.9
78P01048	391-421	Bt8	S		5.5	5.9

*** Primary Characterization Data ***

Pedon ID: S1977TX047002

( Brooks, Texas )

Print Date: Dec 4 2024 3:34AM

Sampled As	:	Falfurrias		Mixed, hyperthermic Typic Ustipsamment
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  78P0206

---

Miscellaneous Data

-1-

-2-

-3-

-4-

-5-

-6-

-7-

-8-

-9-

-10-

-11-

-12-

-13-

-14-

(- Sat Paste Ex. -)

(- Sand -)

( Water Content )

Bulk

(- - - - Extractable Bases - - - -)

(- - - CEC8 - - -)

CO3+

(- - - pH - - -)

M+C+VC

Moist Sieved

Density

Depth

Ca

Mg

Na

K

NaOAC

BaCl2

Ca+Mg

HCO3

CaCl2

H2O

.25-2

100 kPa

200 kPa

10 kPa

Layer

(cm)

Horz

Prep

(- - - - - - - - - - - - - - - cmol(+)kg-1 - - - - - - - - - - - - - -)

mmol(+)L-1

mmol(-)L-1

1:10

1:10

(- - - - - % of <2mm - - - - -)

g cm-3

NK

78P01034

0-8

A1

S

5.8

78P01035

8-23

A2

S

5.7

78P01036

23-38

A3

S

5.6

78P01037

38-63

A5

S

5.5

78P01038

63-109

S

5.4

78P01039

109-153

E1

S

5.2

78P01040

153-216

E2

S

5.1

78P01041

216-231

Bt1

S

5.5

78P01042

231-256

Bt2

S

5.8

78P01043

261-315

Bt3

S

6.1

78P01044

322-330

Bt4

S

6.2

78P01045

330-361

Bt5

S

6.3

78P01046

361-378

Bt6

S

6.2

78P01047

378-391

Bt7

S

6.1

78P01048

391-421

Bt8

S

6.1

*** Primary Characterization Data ***

Pedon ID: S1977TX047002

( Brooks, Texas )

Print Date: Dec 4 2024 3:34AM

Sampled As	:	Falfurrias		Mixed, hyperthermic Typic Ustipsamment
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  78P0206

---

Clay Mineralogy (<.002 mm)				-1-	-2-	-3-	-4-	-5-	-6-	-7-	-8-	-9-	-10-	-11-	-12-	-13-	-14-	-15-	-16-	-17-	-18-
				X-Ray					Thermal				Elemental							EGME	Inter
													SiO2	Al2O3	Fe2O3	MgO	CaO	K2O	Na2O	Retn	preta
	Depth		Fract	7A2i									7C3								tion
Layer	(cm)	Horz	ion	( - - - - - - - - - peak size - - - - - - - - - - )					(- - - - - - - - - % - - - - - - - - - -)				(- - - - - - - - - - - - - - - - - - - - - % - - - - - - - - - - - - - - - - - - - - -)							mg g-1
78P01042	231.0-256.0	Bt2	tcly	MI 3	KK 3	MT 2	QZ 1								9.0			2.9

FRACTION INTERPRETATION:
tcly - Total Clay <0.002 mm

MINERAL INTERPRETATION:
KK Kaolinite	MI Mica	MT Montmorillonite	QZ Quartz

RELATIVE PEAK SIZE:

5 Very Large

4 Large

3 Medium

2 Small

1 Very Small

6 No Peaks

*** Primary Characterization Data ***

Pedon ID: S1977TX047002

( Brooks, Texas )

Print Date: Dec 4 2024 3:34AM

Sampled As	:	Falfurrias		Mixed, hyperthermic Typic Ustipsamment
USDA-NRCS-NSSC-Soil Survey Laboratory			;	Pedon No.  78P0206

---

Sand - Silt Mineralogy (2.0-0.002 mm)

-1-

-2-

-3-

-4-

-5-

-6-

-7-

-8-

-9-

-10-

-11-

-12-

-13-

-14-

-15-

-16-

-17-

-18-

X-Ray

Thermal

Optical

EGME

Inter

Tot Re

Grain Count

Retn

preta

Depth

Fract

7B1a2

tion

Layer

(cm)

Horz

ion

( - - - - - - - - peak size - - - - - - - - - )

(- - - - - - - - % - - - - - - - - - -)

(- - - - - - - - - - - - - - - - - - - - % - - - - - - - - - - - - - - - - - -)

mg g-1

78P01034

0.0-8.0

A1

fs

92

QZ 85

FK 8

CD 7

TM tr

78P01037

38.0-63.0

A5

vfs

85

QZ 78

FK 14

CD 7

FP 1

TM tr

ZR tr

MG tr

78P01037

38.0-63.0

A5

fs

92

QZ 85

CD 7

FK 6

OP tr

FP tr

78P01039

109.0-153.0

E1

fs

92

QZ 87

FK 8

CD 5

78P01042

231.0-256.0

Bt2

fs

93

QZ 86

CD 7

FK 6

FP 1

FRACTION INTERPRETATION:
vfs - Very Fine Sand 0.05-0.1 mm	fs - Fine Sand 0.1-0.25 mm

MINERAL INTERPRETATION:
CD Chert (Chalcedony	FK Potassium Feldspar	FP Plagioclase Feldspar	MG Magnetite	OP Opaques
QZ Quartz	TM Tourmaline	ZR Zircon